Kelvin Active Hoody
Kelvin Active Hoody
Kelvin Active Hoody
Kelvin Active Hoody
Kelvin Active Hoody
Kelvin Active Hoody
Kelvin Active Hoody

Kelvin Active Hoody

  • Big Game : Optifade Open Country
(6 Reviews)

The Kelvin Active Hoody is a year-round standout and will perform under intense dynamic conditions all season long. Constructed with a 4-way stretch nylon shell for an incredible range of motion and durability plus lightweight Polartec® Alpha Direct insulation for superior breathability and warmth while you’re on the move.

Product ID: #30058

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"

Equinox & 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
  • GORE™ OPTIFADE™ Concealment Open Country is scientifically optimized for engagement ranges of 50 yards and beyond at ground level in rocky terrain above the timber line.

  • Weight: 9.75 oz. // Size: L

  • Face Fabric: 20-Denier 4-Way Stretch Woven Nylon (87% Nylon, 13% Spandex)

  • Insulation: 90-gram Polartec® Alpha® Direct Insulation.

  • Half-Length Sleeves: Reduce bulk and provide for excellent bow string clearance.

  • Polartec® Alpha® Direct Insulated Pass-Through Handwarmer Pocket: Keep your hands warm in a myriad of environments.

  • Form-Fitting Hood: Optimizes peripheral vision and low heat retention.

  • YKK® Zippered Chest Pocket: Keep your critical items right at your fingertips.

  • Polygiene® Odor Control Technology safely neutralizes odor caused from sweat.

  • Imported

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



Why We Made This

We found a hole in our system when it was too cold for a base layer, but too active to be wearing a puffy jacket. Our solution was to create a high-performance insulating mid-layer with superior breathability for active pursuits. Constructed with a DWR-treated, durable nylon face, the Kelvin Active Hoody can be worn as an outer layer in mild conditions or as a breathable, insulating mid-layer in the late season.

Product Comments

6 Reviews
Write a Comment
Mike M
Reviewed On 10/30/2021

First- Polartec Alpha is THE active insulation to have- it just works better than any other active insulation out there. Getting the right weight and the right fabric to go with it is the tough part. Sitka got the right fabric- it's "naked" Polartec Alpha on the inside, with a very breathable (and quick drying) outer fabric. This is exactly what you want in active piece- something that lightly insulates and something that breathes well and dries quickly.

BUT you must choose between sleeves or a hood, both of which I want in a piece where I'm moving all day. The hoody has a hood (a nice hood too!), but no sleeves- the jacket has sleeves, but no hood.

Sitka- take this to your design team. The hard work is out of the way- stick w/ Polartec Alpha, stick with the outer fabric and stick with the hood design- simply add longer sleeves and you've got the best active layer jacket on the market.

Reviewed On 08/29/2021

Awesome lightweight insulation piece. I really enjoy the short sleeve, reduced bulk and very packable, not to mention string clearance. My go to insulation piece August through September. Pair it with the heavyweight hoodie and it's warm to weight ratio is incredible. Also just throwing this on over a base layer for run and gun hunting on chillier days, it wicks away moisture and odor very well! You won't be disappointed.

Eric Dill
Reviewed On 04/01/2021

This piece of Sitka Gear does not get enough attention. It is super light weight, warm and even with short sleeves keeps you pretty toasty at 40 degrees if your moving around. Snags very easily and don't like that at all. So walking through the woods as I do everyday would destroy this piece in about an hour. If your going to put it under something or wear it else where it is awesome.

Brad M
Reviewed On 09/12/2020

The early season insulation layer I didn't know I needed. I did not really think I would like this jacket as much as I did. It was my sole insulation layer and it performed flawlessly. Light enough to stuff in a day pack as well. Love the short sleeves for archery. It's actually a great idea. Would reccomend.

Reviewed On 08/06/2020

Light, quiet, breathable, comfortable, fits well. I primarily use this and the core lightweight hoody for September elk. Throw it on after climbs for chilly morning and evening stalks. Packs small for covering ground through mid-day (or doubles as a napping pillow). Reduces/eliminates layering bulk and bunching. Later in the season, its a great mid layer or active outer layer. Versatile, simple, and well thought out. Nice work Sitka!

Reviewed On 05/14/2019

Tried this out recently and was really impressed. I wasn’t sure what to think at first but it fits nicely under the Mountain Jacket, and any other mid/outer layer like the core heavyweight hoody for example. Adds that kick of warmth on a chilled day. Super light, packable, breaths well and quiet.

1 of 2
Steven Drake - 08.11.2019

7 Tips For Archery Elk Success

"Through a decade’s worth of lessons, I’ve found the following tactics have special merit in the elk woods and, when I have remembered to implement them, increased my chances at arrowing a bull." - Steven Drake