Kelvin Aerolite Vest in Dusty Olive
Kelvin Aerolite Vest in Dusty Olive
Kelvin Aerolite Vest in Dusty Olive
Kelvin Aerolite Vest in Dusty Olive
Kelvin Aerolite Vest in Dusty Olive
Kelvin Aerolite Vest in Dusty Olive
Kelvin Aerolite Vest in Dusty Olive
Kelvin Aerolite Vest in Dusty Olive

Kelvin Aerolite Vest

  • Hunt Solids : Dusty Olive
$199.00 $119.40
(22 Reviews)

To be notified when an out-of-stock product is available, please select your size and click the "EMAIL ME" button.

In a sea of outdoor specialization, having versatile gear as well is a strength. This lightweight, compressible vest 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: #50258

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


    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.


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


    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

    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.


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


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

Back to Shopping
  • Weight: 9.6 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

  • Deep, zippered chest pocket safely stores your valuables

  • Imported

Product is Standard Fit, designed to be layered for versatility.



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 Vest 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

22 Reviews
Write a Comment
Reviewed On 01/29/2023

Color shown in pictures is a lot darker than it actually is. The jacket is more like a light olive color. Own a lot of Sitka gear and quality is always there but the color on this one is definitely misleading.

Reviewed On 01/16/2023

Vest fits great, warm, great wear.

Chris T
Reviewed On 01/15/2023

Without question Sitka Gear is the best out there. Love the way the vest fits. Great golf accessory just heavy enough for some insulation but light enough for a full range of motion. One issue is the material seems to stain easily. Overall this garment exceeded my expectations.

Reviewed On 01/03/2023

Love it. Ordered medium for my husband and he’s 5’8, 165lbs, athletic build. Fits comfortably over a shirt.

Scot H
Reviewed On 12/25/2022

I love wearing vests and Sitka is my favorite. I started with open country camo for hunting and now I have the solids for everyday wear.

Ken Siverts
Reviewed On 12/19/2022

I know all of you hunting folks will laugh but I’ve found this vest to be wonderful for golf. We started yesterday at 41 degrees. Perfect fit and light weight with exceptional warmth.

Reviewed On 12/12/2022

Great fit & feel, another great product!!

Reviewed On 11/24/2022

I’m a Sitka fanatic and love every piece of clothing I’ve purchased from Sitka. Except for this vest. For the price, I was expecting a lot more. This vest is as thin as a t-shirt with not very much insulation. I was expecting a puffy vest from the photos. The fit is perfect and I will use it as a layering piece. Just not what I expected.

J Stapleton
Reviewed On 11/22/2022

Love everything about it but not a fan of the elastic around the arms… makes it a bit uncomfortable in the armpits. If I could change that, I’d give it 5 stars.

Reviewed On 11/13/2022

Lightweight and warm for my core. It keeps me going as a crucial layer in winter and as a top layer for Fall hunts.

Reviewed On 10/28/2022

Very comfortable and warm.

Reviewed On 10/22/2022

Packable just like it says. I've enjoyed this vest. Light weight and warm great for early season, testing it out as we speak as the temps get cooler.

Reviewed On 10/17/2022

Very light weight, works great if your jacket is wind proof. If your jacket isn’t wind proof, you may get cold. Overall I would recommend but wouldn’t mind seeing a little thicker version in the future.

Nick Guebert
Reviewed On 09/11/2022

I’m 6’3 245lbs and the XL fits perfectly. The armholes can be a little bit tight if you’re trying to put this over a jacket, but it seals up perfectly over a mid weight layer and keeps the wind out so well. Unbelievably light and warm, would recommend.

Reviewed On 03/19/2022

Purchased the jacket last year for Colorado elk in September. Love the jacket so much I had to get the vest. The jacket feels like you're wearing a long sleeve shirt and the vest feels like a tank top. The warmth to weight ratio is off the chart. I look for Sitka to redesign many garments with this insulation.

Jeremy Sanchez
Reviewed On 03/16/2022

The perfect lightweight vest on the market! Durable, comfortable, lightweight, and great packability. If you're looking for a casual vest to wear around the town look no further.

Emmett Albertson
Reviewed On 02/11/2022

I have never owned a vest. I am super excited about this vest. Quality is stellar, and the wife likes the way it looks!

Travis L
Reviewed On 12/31/2021

Great fit, super durable, lightweight and packable. I bought the black in Large. I’m 6’1” and 190 lbs. It’s great to layer and keeps core warm. My second Sitka purchase. I’ll be back for more.

Shanem M
Reviewed On 12/20/2021

Definitely want to size up! I normally wear a medium to large and needed an extra large with this vest. Besides that, a fantastic piece overall.

Reviewed On 12/19/2021

I have two of these. The first I ordered in XL thinking it would be handy to throw over my jetstream jacket during low activity without having to constantly take off my jacket. Extra warmth was ok, but I apparently don’t worry about my gear much when I get into the elk. It’s pretty shredded after one season. Totally my fault. Won’t do that again. Second one ordered in large to layer under the Jetstream Jacket, as Sitka probably intended. Extra warmth is much more noticeable, but not too much to hike in if it’s cold, especially with the pit vents open. This vest feels weightless, and fits my frame perfectly in large. 5’9” 170lbs.

Reviewed On 12/10/2021

The fit wasn't what I expected and felt somewhat tight around the torso. I would size up.

Rodney Thomas
Reviewed On 10/04/2021

Fit is very strange. Very tight under the armpits, yet is baggy around the mid section and neck area. The fit of the jet stream and Dakota are much better. I have a lot of Sitka gear and this piece wasn’t designed as a mid layer fit wise.

1 of 6
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...