Kelvin Aerolite Jacket
PrimaLoft
Kelvin Aerolite Jacket
PrimaLoft
Kelvin Aerolite Jacket
Kelvin Aerolite Jacket
Kelvin Aerolite Jacket
Kelvin Aerolite Jacket
Kelvin Aerolite Jacket
Kelvin Aerolite Jacket
Kelvin Aerolite Jacket
Kelvin Aerolite Jacket

Kelvin Aerolite Jacket

  • Everyday : SITKA Black
$309.00
(40 Reviews)

In a sea of outdoor specialization, having versatile gear as well is a strength. This lightweight, compressible jacket maximizes warmth while minimizing bulk. Use it for everything from backcountry hunts and off-season scouting trips to everyday life; it slips comfortably under a shell whenever you need an extra shot of warmth. Synthetic PrimaLoft® Gold Insulation with Cross Core™ technology replicates the aesthetics and performance of down insulation, but with warm-when-wet performance.

Product ID: #50256

Men's
Sizing Guide

Jacket & Tops Sizing

Size Chest Sleeve
Small 36 - 38" 33"
Medium 39 - 41" 34"
Medium Tall 39 - 41" 36"
Large 42 - 45" 35"
Large Tall 42 - 45" 37"
X-Large 46 - 49" 36"
X-Large Tall 46 - 49" 38"
2XL 50 - 53" 37"
2XL Tall 50 - 53" 39"
3XL 54 - 57" 38"

Pant Sizing (Inches)

Size Waist Reg Tall
30 30" 31"
31 31" 31"
32 32" 31" 33"
33 33" 32" 34"
34 34" 32" 34"
35 35" 32" 34"
36 36" 33" 34.5"
37 37" 33" 34.5"
38 38" 33" 34.5"
40 40" 33"
42 42" 33"
44 44" 33"

Pant Sizing

Size Waist Reg Tall
Small 28 - 30" 31"
Medium 31 - 33" 31" 33"
Large 34 - 37" 32" 34"
X-Large 38 - 41" 32" 34"
2XL 42 - 45" 32" 34"
3XL 46 - 49" 32" 34"

Dakota Pant Sizing

Size Waist Reg Tall
30 31" 31"
32 33" 31" 33"
34 35" 32" 34"
36 37" 32" 34"
38 39" 32" 34"
40 41" 32"
42 43" 32"
44 45" 32"

Glove Sizing

Size Palm Circ Length
Medium 8 - 8.5" 7.5 - 8"
Large 9 - 9.5" 8.5 - 9"
X-Large 9.5 - 10" 9 - 9.5"
2XL 10 - 10.5" 9.5 - 10"

Gaiter Sizing

Size Calf Circ Boot Size
M/L 17.5" US 6-10"
L/XL 18.5" US 10-14"

How to Take
Your Measurements

  • 1. SLEEVE MEASURE

    Bend your elbow and put your hand on your hip. Measure from the center of the back of your neck, along the shoulder and down the elbow to the wrist bone.

  • 2. CHEST SIZE

    Take measurement under armpits, around fullest part of chest and shoulder blades.

  • 3. WAIST SIZE

    Measure around where you normally wear your pants, keeping the tape measure a bit loose or putting one finger between your body and the tape measure.

  • 4. INSEAM

    In a standing position,measure from your crotch to where you want your pants to end, breaking at the top of the shoe in the front and just above the heel in the back.

  • 5. GLOVES

    With hand partially closed, measure over the knuckles, around the hand, excluding the thumb.

Fit Guide

SITKA Gear engineers gear with a specific Fit and intended end use in mind. These functional designs provide the user with authentic garments for the right situation.

Fit Descriptions

We can communicate our Fit descriptions in 3 different ways. Keep in mind that each garment will allow for layering in accordance to the garments place in a system and described Fit

  • P/F
  • S/F
  • E/F
  • P/F - PERFORMANCE FIT

    Designed for minimal layering. Whether an early season piece or already insulated this garment fits to prevent inefficiencies in heat retention caused by dead space.

  • S/F - STANDARD FIT

    Designed to accommodate layering for more versatility from early to late season climates.

  • E/F - EXPEDITION FIT

    Designed for maximum layering in the worst conditions. Cut roomier to accommodate additional layering underneath.

Back to Shopping
FEATURES & SPECS
  • Weight: 16 oz.

  • Synthetic PrimaLoft® Gold Insulation with Cross Core™ technology replicates the warmth and compressibility of down, but with the benefit of warm-when-wet performance

  • Lightweight insulation (35% recycled) is infused with silica aerogel, a nearly weightless material that’s composed of more than 95% air and acts as additional thermal insulation

  • 20-denier polyester face with durable water repellent finish, 20-denier polyester backer

  • DWR finish resists precipitation and prevents face fabric from wetting out

  • Gusseted stretch cuffs allow for smooth, easy layering and unrestricted shooting

  • Fitted hood provides low-profile warmth and concealment; doesn’t obstruct peripheral vision

  • Deep, zippered chest pocket safely stores your valuables

WARMTH
PACKABILITY
WIND PROTECTION
DURABILITY
Fit
Product is Standard Fit, designed to be layered for versatility.

Technology

PrimaLoft

Why We Made This

The best thing about synthetic insulation is that it stays warm even in extreme, wet conditions. Until now, that reliability has come at the cost of bulkier and heavier products. The Kelvin Aerolite Jacket harnesses the insulating properties of trapped air to create synthetic insulation that replicates the low-bulk, highly compressible characteristics of down, but with warm-when-wet performance. We designed this go-to, versatile layer to keep you warm when you need it, yet disappear in your pack when you don’t.

Product Comments

40 Reviews
Write a Comment
Colton
Reviewed On 10/01/2022

This jacket is a great piece to wear by itself but its meant to layer you put any type of jacket under this and you will 100% stay warm.

Mark Silberstein
Reviewed On 09/30/2022

Just received my Kelvin AeroLite jacket, quick shipping, great sale price. After looking over the jacket, I found no threads hanging, great quality as always with Sitka. This jacket folds up to nothing, and takes up basically no room in my backpack. As for sizing: I am 6'0' 180lbs, athletic build, and with all my Sitka apparel, I always buy size LARGE, this item fits perfectly. To go one step further, I tried on a core base layer, mid layer, and the Aerolite, no problem shouldering a long rifle. The only slight negative, is the hood is a little noisy. This makes no difference to me. Don't hesitate buy one on sale.

Gordon
Reviewed On 09/29/2022

Light weight jacket. Decent warmth using at about 34 deg with base layer. The problem is the hood. The material on the inside of the hood is terrible. It sounds like I'm wear a potato chip bag on my head. The material rubbing on my head is so loud, making it not usable. Even just sitting and glassing. It's just too loud and annoying with the slightest movement. I tried layering the hood with a beanie and merino hoodie. Still no help.

I'll be returning for this reason.

Clayton
Reviewed On 09/15/2022

This jacket is incredibly warm especially for the weight. I’m 6 foot 215lbs, I wear an XL in just about everything from Sitka and this jacket in XL fit great except for the midsection. I could probably fit a basketball under it. I would recommend trying to find a dealer to try on first if possible if you think you may be in between sizes.

Luke
Reviewed On 06/28/2022

Love this jacket. 6’3” 190. Large Tall fits perfectly. I wore this during Colorado’s 2nd rifle season last year and found that it kept my temperature very well regulated. I never felt too hot or cold, when hiking or glassing and a good jacket for hanging out at camp in the evening. Not for busting brush or rain protection but a great insulation piece and does that very well.

Joey B
Reviewed On 06/13/2022

I was skeptical on this product. I love the Kelvin lite hoody. That said, this jacket is everything that jacket is but lighter and more refined. This piece will be in my pack all summer and fall. Even bought one in Black for around town.

Matt
Reviewed On 06/09/2022

SIZE XL: I am 5'10" 190lbs with a 46" chest, 35-37" arms, and 34" waist. The insulation and material seem excellent. But my goodness I can fit a watermelon under in the abdomen and cannot extend my arms or bring my elbows together. Not sure who these are cut for but it's not for those with wide shoulders and an average waist.




Todd Tinsley
Reviewed On 05/23/2022

Sitka’s rating of this jacket was a little modest. It’s BA! I’m a bigger guy and often times Sitka jackets are a little tight in the shoulders. This jacket fits perfect. It’s warm and keeps the wind off. It will be one of, if not your favorite piece.

PATRICK SKAAR
Reviewed On 04/26/2022

I have to admit I have been on a Sitka buying binge over the last year and a half since I purchased my first product. OUT OF EVERYTHING I HAVE PURCHASED SO FAR THIS IS MY FAVORITE.....and everything has been better than advertised on all products. (That's why I have two big totes full of Sitka gear at this point.) The whitetail hunting gear from bibs to hoodies to jackets was so good I wanted to buy some Sitka gear for "everyday" use. I was stunned by how warm the Kelvin Aerolite Jacket keeps me while being so light. Large size fits me perfect. and I'm 5'7", 175 pounds. It actually feels like it is a heated jacket. 30-50 degrees and it's all I need. Above 40, I don't even keep it zipped up all the way. I get lots of compliments and questions about it when I wear my black colored one out and about. HIGHLY RECOMMEND IT!

Cambell
Reviewed On 04/14/2022

I read the other reviews before buying this jacket. I was skeptical when they said how light and thin this jacket it. Then I looked into the aerolite insulation. It seemed like the real deal. That's why I made the purchase. I was able to test it out recently. I'm from Utah so this is without humidity. It was 30 degrees out and blowing 20 mph. I was only wearing one of those thicker Carhartt shirts underneath. It blocked out the wind easily and kept me warm! I had on jeans and some Cabela's midweight bottoms underneath and my legs were getting cold instantly. This jacket is the real deal.

Troy
Reviewed On 04/03/2022

This jacket is hands down my favorite Sitka piece. Stayed extremely warm in a very snowy Colorado elk hunt last fall. Own a large tall and the fit is perfect!! Stayed comfortable all week in 14-25 degree days. (NOTE: we don’t experience humidity like most of the country) But of all of the Sitka pieces I own, this is the most important. If you don’t purchase anything else at least buy this jacket.

Casey Doyle
Reviewed On 03/11/2022

I had my doubts about this jacket when I first pulled it out of the box because it felt so light and delicate. Holy cow was I wrong... I've been very impressed with the jacket from its ability to buck wind, to being warm, and also breathing a bit to not be too hot. You won't regret it.

Paul Ciolino
Reviewed On 02/15/2022

The quality build of this jacket is amazing. The attention to every detail and the high quality material is just far above anything else I have purchased over the last 40 or so years of buying hunting/fishing gear. So do yourself a favor. Spend the big bucks and you will not be disappointed.

jk
Reviewed On 02/12/2022

I really like this puffy jacket. It seems to deliver a bit more warmth than you would expect for its weight. I had kelvin lite hoody before and I often felt clammy in it, but this one doesn't seem to have that issue. The hood fits nice and close to the face allowing good visibility. I feel like this was worth upgrading to.

Emmett Albertson
Reviewed On 02/11/2022

This jacket is sweet. Super happy with the purchase. For how insane light it is, it is insanely warm. Weight to warm scale is crazy.

Bob M
Reviewed On 01/27/2022

I've worn this outside in single digit windy weather this winter a lot. You just don't get cold in this thing. The wind has no effect either. And it is so light, you don't know you are wearing it. And you don't get over-heated in it either. I haven't touched any of the other coats I have since I put this on. Nothing like it!

Hayden Sandall
Reviewed On 01/20/2022

Great jacket that is very warm for how light it is. 10/10 recommend to wear every day!

Yanni K.
Reviewed On 01/05/2022

Having bought the vest for a few months I was very curious to see what a full hoodie would do. I am quite impressed. Not too bulky and fairly light but it does feel heavier/thicker than the vest. Wearing the hoodie and the shake dry jacket on top I feel very comfortable even with freezing temperatures. I think the GORE-TEX over it makes the big different but the hoodie on its own is warm enough and comfortable enough for every day use. I went with a size Large and it has excellent fit. I am about 45 chest, 34 waist and i have full movement with a base layer. The size is good enough to wear, say a fleece zipper and still feel comfortable, not too tight to have full mobility.

Highly recommended!!!

Shane R.
Reviewed On 01/03/2022

I usually wait a year/season before writing a review but I have to say you don’t have to wait to buy an Aerolite. For being this lightweight it shouldn’t be this warm. It’s better than some of my other, more expensive puffy pieces. It’s a new favorite for sure.

Kaden
Reviewed On 12/24/2021

Amazing jacket. Really impressed with how warm it is. I even use it on duck hunts. Definitely going to invest more into the aerolite system.

Jeremy
Reviewed On 12/15/2021

This jacket is great so far. It's very lightweight and with just a t-shirt underneath pretty warm. Can easily wear as an outer jacket or as a layer. I bought a solid color to wear around town and under my ski jacket. I am 5'10" and 160 lbs and ordered the medium. It fits perfect. My only knock is that it is short in the front which is typical, in my experience, for Sitka jackets. I would prefer their jackets to sit a little further below the waist than they do. Overall though, I would order the jacket again and look forward to its use.

Tanner W.
Reviewed On 12/10/2021

Not only is this an awesome piece, but it is what Sitka claims. This jacket is by far one of my favorite Sitka pieces. I hunt in mine and wear out as well. It runs true to size. I stood in the misting rain at 42 degrees for over an hour and never did I get wet or cold. GREAT JOB Sitka. I will definitely be buying another color. If you do not have this Jacket you better get one.

stephen spjut
Reviewed On 12/06/2021

I love everything about this jacket except how noisy it is. I archery hunt and its a very loud jacket to move around in in the woods.

Roark
Reviewed On 12/04/2021

I like the jacket and overall quality seems great. I did have to size down. I typically wear a Large at 5’11, 186lbs, 42” chest but the Large seemed to swallow me. The medium will work the best for me in this specific jacket. Hopefully, that helps if you're trying to decide sizes. Standard fit make sense for it to fit for more layering.

JS
Reviewed On 11/30/2021

Great jacket. Amazing warmth to weight ratio. Also looks great and fits well.

George
Reviewed On 11/29/2021

I have been really impressed with this jacket. It is the perfect warmth for archery elk season while glassing and very pack-able when not being worn. Fit is perfect for me.

Gary Strong
Reviewed On 11/23/2021

Wore this on Saskatchewan hunt in temperatures of 2°F to 30°F in a pop up blind to test the layering. Seemed thin and I was skeptical of how warm it would be but I was pleasantly surprised. I layered with two heavyweight wool long johns, the Celsius Midi, Kelvin Aerolite Jacket, and Incinerator Bibs and I was not chilled during my nine hour sit. Would like a little more room in arms as us gun hunters don't need such a tight fit as the bow guys. Great job SITKA!

John
Reviewed On 11/19/2021

Awesome jacket. Absolutely my go-to piece from now on. It's an outer-layer when it’s cool and a mid-layer when it’s cold. Super compressible. Way warmer than it should be seeing as thin as it is. Relatively silent and not nearly as loud as the Kelvin Lite Jacket.Solid color can be worn anywhere. Warm when wet and I mean wet! Wish it came with a stuff sack and removable hood. Hood although is a good snug fit!

Garrett
Reviewed On 11/02/2021

Not too impressed with this product I’ve been a long term Sitka fan for a while however this doesn’t live up to the name…. After one hunting trip there is already wear and insulation busting out of the seams. I also washed it according to manufactures spec hand washing it with a down specific detergent rinsing twice and then tumble drying with tennis balls and my jacket has water stains all over it.

Nathan Watt
Reviewed On 10/27/2021

This jacket is extremely packable and lightweight yet keeps me more warm than several other parka style jackets I own. Well worth the money and will be my primary mid-layer for the later hunting season and my outer layer during the early season. The lack of bulk makes this jacket extremely versatile without giving up warmth. Most impressive was how I stayed warm after getting caught out in a rain storm...incredible performance.

Will G
Reviewed On 10/27/2021

The jacket is very warm and made well like all Sitka items, but it is far from the athletic fit that I have grown to expect from Sitka products. I have an athletic build, 185 lbs, 6'1, and this jacket looks like a poncho on me, tons of room around my chest and torso. I ordered my normal size of Large.

Peter Katinic
Reviewed On 10/19/2021

This was a go to piece of clothing on my northern BC Caribou hunt. Lightweight, packable and was kind of magic in that it kept me the perfect comfort level across a wide range of temperatures.
I am 5'9" and 230lbs so on the hefty side and the XL was perfect for me. I am pretty broad chested so have hell of time to get jackets to fit my shoulders right. It does have a more forgiving fit in the arms compared to the Kelvin Lite jacket. I pretty much wear this jacket all the time now including around home.

Eric
Reviewed On 10/19/2021

I have the original Kelvin Jacket and the Kelvin Aerolite Jacket. Each has its merits. The Aerolite weighs less, better with wind and more packable. I have hunted wearing both jackets (at different times) in upper 20s and low 30s morning weather and I was warmer in the original Kelvin Jacket which I appreciated when I was static. Also, the original Kelvin Jacket allowed for better breathing and moisture wicking. Overall I prefer the original Kelvin Jacket. For me, a mid-layer, should be warm and moisture wicking. There are other layers for wind/water protection. Since the Aerolite does not breathe as well, I think Sitka thought they could reduce the amount of insulation to retain weight to warmth ratio. This is a great jacket for the minimalist, but I definitely prefer the original Kelvin Jacket.

Tim
Reviewed On 10/16/2021

LOVE this piece. I haven’t taken it hunting yet, but I live in Alaska and have worn it in a ton of different conditions so far this fall. From rain and cold to snowing in the 20's. Highs were in the 30's the other day and I wore with a medium weight hoodie for 3-4 hours outside. Did not get cold at all. It’s definitely NOT an active insulation piece though. Get moving too much and you’ll get toasty in a hurry. I am 6’4, 210lbs and I ordered a large initially for every day use. It fits amazing but is a little short and not much room for layering. I’ll keep that as my town jacket and just ordered a second in XLT for hunting. Looking forward to testing it in some harsh conditions 2 weeks from now on a PWS Blacktail deer hunt. I have the Kelvin Down Lite Hoody and the Kelvin Down WS Hoodie. It’s definitely not as warm as those…but the synthetic adds a lot of versatility.

Nate
Reviewed On 09/24/2021

I bought this jacket for it’s light weight and packability. I took it on a 5 day backcountry elk hunt and really enjoyed the versatility of the Kelvin Aerolite. I was surprised at how well it worked keeping me warm in a wide range of activity. From hiking, glassing after the sun went down, and even sleeping, the jacket was very comfy and functioned well. We got rained on from a storm that came out of nowhere, and it was still warm and comfortable to wear. It’s a great jacket!

Matt
Reviewed On 09/16/2021

This is the perfect puffy jacket. I'm blown away with the warmth to weight ratio. Sitka's attention to detail on this jacket shows. The stretch cuffs slide over my release and fit over a watch while still sealing out the wind. It is warmer than the Kelvin Active Jacket. I'm 5'11" and 185 lbs with a muscular build. I wear a size large in all Sitka tops, and this one fits perfectly with room to layer. I love it so much I got Subalpine and black. The only complaint is it's not silent, but still not loud. I don't think the noise will be an issue for archery elk hunting.

Paul l.
Reviewed On 09/13/2021

Just got back from 10 day elk hunt in Colorado. Temps ranged from 34°F to 44°F for lows and 54°F to 65°F for high. Found myself wearing this jacket just about all the time. So lite and comfortable. Warm with minimal layers. Definitely a great piece of clothing. Sitka did very well with this.

Alan W
Reviewed On 09/06/2021

This is my first piece of Sitka gear and wong be my last. For reference I am 6'3", 215 athletic build and I ordered the XL Tall. It fits me perfectly and the quality is awesome. I was worried when I took it out of the box because it feels pretty thin. But then I put it on and could instantly feel my arms and head getting warm. I have no doubt it will be perfect to throw on while glassing between hikes and keep me warm. The sleeves taper perfectly, have a stretch panel down near the cuff so it easily goes over your hands and wont interfere with my bowstring. The hood is also perfect as it isn't bulky, doesn't block your peripheral vision and works great with or without a hat on. The body is a good length and wont let in drafts while sitting to glass for animals. The Subalpine camo is amazing as well and will work pretty much anywhere. Overall, I am very impressed with this jacket. Will update after season on durability.

Paul
Reviewed On 08/07/2021

Just got this jacket and without testing it out yet due to it being August all I can do is give a unboxing review. First thing you notice is it is extremely lite. I mean it. I have shirts that weigh more. Fit is perfect. 5'8", 195 lbs. 45 inch chest. Ordered a large. Im surprised at how quiet it is being kinda like a puffy. Its not fanatic line quiet but I will definitely wear whitetail hunting if needed. I ordered this for archery elk hunting and it will definitely fit into pack for that. I will try to do an update after my elk hunt this September. But if you're on the fence, I would recommend you pull the trigger.

Paul K Lowe
Reviewed On 08/04/2021

Just got this today. The reason for 4 stars is because I haven't tried it in the field yet. But as soon as my archery elk hunt is complete I will give a updated review. So this is a first impression review on quality and fit. 4 stars being the highest. Fit is perfect. Im 5'9 190 pounds with a 45 inch chest. I ordered a large. Build quality is very good, typical sitka. Packs down very small, weight is mind blowing. I have marino base layers that weigh more. And im very surprised that this garment is very quiet for what it is. Nothing like a typical puffy. Not silent, but you could stalk wearing it. Hood fits very well. So without testing in the field yet , I can say this product has no buyers remorse attached to it.

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Steven Drake - 06.22.2021

Backcountry Essentials

Steven Drake has logged more time than most backpack hunting in remote mountain ranges and prairie. As we all know, the lessons and niche information we glean from experience is invaluable. Information on layering and camping gear is pretty simple to find – but those small, unpredictable items that are worth their weight in gold in your pack are typically discovered after a bad experience. Through hard-earned mistakes, Steven has dialed in a list of obscure gear that he carries in his pack on every hunt. Here’s his full list...

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