Ascent Shirt
Ascent Shirt
Ascent Shirt
Ascent Shirt
Ascent Shirt
Ascent Shirt
Ascent Shirt
Ascent Shirt
Ascent Shirt

Ascent Shirt

  • Big Game : Optifade Subalpine
(17 Reviews)

The Ascent Shirt was engineered to persevere through the hot & harsh conditions of early season hunts. Extremely breathable, quick-drying and UPF protected make this form-fitting base layer your best friend. Streamlined sleeves provide ample string clearance, mesh-backed & zippered chest pockets deliver extra ventilation to keep you cool on the move.

Product ID: #50160

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
  • GORE™ OPTIFADE™ Concealment Subalpine is designed for stalking and ambushing ungulates from ground level in tree-covered and vegetated terrain.

  • Weight: 4.7 oz. // Size: L

  • Fabric: 20-Denier Stretch-Woven Nylon Ripstop, Quiet Knit Polyester Grid Jersey, Mesh Underarm Panels

  • Body-Mapped for Breathability: Thoughtfully mapped fabrics offer air-conditioned comfort - the Ascent Shirt has a lightweight but durable nylon body and polyester knit sleeves for the ultimate in fit and function.

  • Knit Panels: The knit panels in the Ascent Shirt provide stretch in key areas.

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

  • 29 UPF with no chemical treatment.

  • Flip up collar for sun protection.

  • Imported

Odor Control
Moisture Wicking
Product is Performance Fit, designed for minimal layering.



Why We Made This

Hunters have struggled to find a technical hunting shirt for hot weather–often relying on their base layer to fill this need– and most base layers are not optimized to be worn as outerwear because they lack the durability and UPF protection needed for early-season hunts. Our approach was to create a lightweight yet durable technical hunting shirt, something that hadn’t yet been offered to the big game hunter. We’ve leveraged our textile development and construction prowess to deliver evaporative cooling, UPF protection without chemical treatment and resistance to chafing from backpack straps.

Product Comments

17 Reviews
Write a Comment
Brandon Schmitz
Reviewed On 04/21/2022

If you just sweat no matter what, this is your shirt for those steep adventures! I wear this up. It gets completely soaked while keeping the breeze on me. Once I get to the top. I take it off hang on a branch in the sun. 5 minutes and it’s dry with no stink! Worth the money.

Reviewed On 09/28/2021

Finding a piece that wicks sweat, blocks UV from burning your skin, washed with water and dries fast is a difficult thing. The arms form fit and it all stays tight while offering mobility. I wore it ever day through some nasty terrain and it held up extensively. No pulls, no burrs, no BS.

Reviewed On 02/15/2021

The concept of a lightweight shirt is ideal and this shirt fits the mold, but it is extremely loud and sounds like (and feels like) plastic bags rubbing together. I ordered all my base layers and shirts in size medium (5'6"/175 pounds) and this is the only piece that I cannot fully zip up through the neck. I can get it about 85% of the way zipped. A large would have been way too big, but I suspect I could have at least fully zipped it. For the price tag it feels cheap, loud, and not size matched to their other garments. I have not hunted in this gear yet, but plan to this spring for bear season (Montana) so my review is strictly on appearances, feel, and fitting. For the price, this piece does not impress me at all.

Eric Brown
Reviewed On 09/30/2020

great product! Extremely comfortable and is great for early season stalks!

Reviewed On 09/17/2020

Reviewed On 04/07/2020

Anytime I’m hunting in warm weather I wear the ascent system. This shirt breathes incredibly well and is durable beyond belief. Looking forward to more use next week spot and stalking turkeys.

Mike S
Reviewed On 02/15/2019

This is a great shirt for any summer, early fall activity. It is also a must-have shirt for any serious early season elk or deer hunter. It weighs almost nothing, dries quickly and is incredibly comfortable. I wore this shirt on at least 7 days of a 11 day Montana elk hunt and I was happy to find that it didn't hold on to odor.
Do yourself a favor and buy this shirt!

Rich Mealey
Reviewed On 02/11/2018

This new pattern is great ..used in B.C and Mexico,cannt buy more quick enough only pattern I’ll take this year to NWT and Mexico

Ryan Lynch
Reviewed On 01/07/2018

I hunted with the Ascent set this September for my Once In a Lifetime Draw ND Elk. It was in the badlands of ND near TR National Park. Weather was hot, in the 80s and 90s during the day. This shirt held up very well. Carrying my pack and rifle, in that heat, I was drenched in sweat. However when I would stop to glass an area, within a half hour, the shirt was virtually dry again. I wore the same shirt for 5 days, by itself during day, and with a layer over in morning and nights, and in very rocky terrain. At night I would hang it on a branch outside my tent. Not only did it hold up to the abuse, it barely had any scent when I would put it back on in the morning. When I harvested my elk, I naturally covered it in blood, and washed it a few days later. All the blood washed out. Excellent early season or hot weather gear. As good as or better than any other hot weather hunting shirt I’ve had.

Reviewed On 12/28/2017

Bought this shirt for hunting here in SoCal. The fit is athletic, but I still fit my normal size. Moisture wicking and fast drying. Helped keep me cool when temperatures spiked to above 80 degrees. Highly recommended.

Reviewed On 10/23/2017

great product and quality was awesome but sizing was little off. Need to order a size bigger.

Reviewed On 09/27/2017

Very lightweight shirt but I didn't find it to be all that comfortable or functional compared to other lightweight shirts in the product line. I prefer the core lightweight shirts over this. I do like the fit through the arms, it's more form fitting which is nice when you're drawing a bow. Built with warmer climates in mind for archery season. It is performance fit, so you may need to size up if you're a tweener size, but I used as a baselayer or standalone layer so the tighter fit didn't bother me.

Reviewed On 09/15/2017

The only long sleeve shirt I've been able to wear without rolling the sleeves up on when it's hot. If you need camo in hot-warm weather look no further. Sitka hit a home-run with this fabric.

Ryan Lynch
Reviewed On 09/11/2017

Can I give this 5 stars? 6? The best hot weather gear on planet. I just finished hunting early season in W ND in temps that exceeded 90 degrees some days. Carrying full pack, I was routinely sopping wet with sweat. After I sat down to glass, not fifteen minutes later I felt completely dry. If you hunt warm to hot conditions, get one of these shirts and pair it with the pants. You won't regret it.

Chris Devlin
Reviewed On 07/26/2017

I love Sitka gear and the quality of their clothing, but the sizing between each piece of clothing seems to be very inconsistent. Moving forward I will try each piece on individually before buying. I am 5'10 225lbs. I was super stoked to get this new piece of clothing for hunting. I have the the Core Lightweight Crew LS and Core Lightweight Hoodie both in XL and they fit absolutely perfect. I recently bought the Ascent shirt in an XL. When I raise my arms ,like I would for glassing, it also feels tight across the back of the shoulders. I can't size up because the body fit is already lose. Love the concept and idea of this shirt , but I will be replacing this with another Lightweight Hoodie.

Mario Vani
Reviewed On 07/18/2017

This is the answer to early season scouting/hunting. The shirt couldn't be more bang on when it comes to answering your need for those hot high output days. Incredibly light, incredibly breathable with no details overlooked.

Caleb Smith
Reviewed On 05/16/2017

My search for the ultimate light weight camo is finally over with this ascent gear. I have other "Lightweight pieces" and none of them come close to this. As for the shirt, pretty much every feature in the description and video are what make the shirt awesome. The material itself is crazy light. This shirt balled up in my hand... is about the size of a baseball... The flip up neck collar isn't too snug making me feel like I am in the woods wearing a neck tie, which some other shirts have done in the past. (6'1" 195lbs size L). The chest half zip is fantastic for giving you extra airflow when you really need it. So far I've worn this chasing turkeys in 90 degree temps down to 65 and been just fine.

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SITKA Gear - 05.29.2018

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