Core Lightweight Crew - Long Sleeve
Core Lightweight Crew - Long Sleeve
Core Lightweight Crew - Long Sleeve
Core Lightweight Crew - Long Sleeve
Core Lightweight Crew - Long Sleeve
Core Lightweight Crew - Long Sleeve

Core Lightweight Crew LS

  • Big Game : Optifade Subalpine
$69.00 $55.20
(16 Reviews)

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

Built from the same moisture-wicking fabric as the Core Lightweight Hoody, our Core Lightweight Crew LS makes for a solid base layer. Whether used as a standalone piece during hot weather or layered into your system, the Core Lightweight Crew will perform across all seasons regardless of the pursuit.

Product ID: #10064

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 Subalpine is designed for stalking and ambushing ungulates from ground level in tree-covered and vegetated terrain.

  • Weight: 5.1 oz. // Size L

  • Fabric: Quick-Dry, Lightweight Comfort Stretch Knit (100% Polyester).

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

  • Imported

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



Why We Made This

Hunters are in need of a foundational next-to-skin piece that can span temperature variations throughout the seasons in order to regulate heat and sweat. Our approach was to build a base layer that, when worn, feels like you were hunting with nothing on. We used durable polyester bi-component construction with Polygiene® Odor Control Technology to deliver breathability, moisture management, and odor control. This crew can be worn as a standalone outerwear piece or layered into a system for all-season hunting.

Product Comments

16 Reviews
Write a Comment
Reviewed On 10/07/2021

The lightweight long sleeve worked great for an unexpectedly warm WY pronghorn hunt. Was perfect when paired with the Jet Stream jacket for the 40's & 50's in the morning and wore just the lightweight the rest of the day with 70's & 80's. Any wind had a noticeable cooling feeling. Highly recommend for anything during warm hunts.

Reviewed On 09/04/2021

This is a great base layer. It fits well, wick moisture and controls odours very well. I am however disappointed in its durability. After only one day of trekking through brush, it has many threads that have been pulled which caused the fabric to pucker slightly. Given this is designed for hunters and is a premium brand, I expected it to be much more durable.

Desert hunter
Reviewed On 08/25/2021

Absolutely nothing to complain about! This is the best shirt for Arizona archery season. I would give it more stars if I could. There are five of us in the hunting group and we all love them.

Reviewed On 06/11/2021

Best synthetic base layer I have worn. I have tried other "poly blend" base layers and they aways end up smelling like a stale locker room after a few days in the field. This base layer can be worn for multiple days without feeling like I am going to blow anything downwind out of the unit

Reviewed On 05/31/2021

This is a must have for hunting out west during archery season. Breathability and comfort is key for warmer temps.

jeffery ingle
Reviewed On 05/25/2021

I wear this shirt for early season and as a layering piece next to skin. Its super comfortable and a great early season shirt. The hand loops make it very easy for layering other pieces.

Ben Weller
Reviewed On 05/25/2021

Fits great and is lightweight and breathable. Works well as a layer or a stand alone piece.

4Zach Miller
Reviewed On 03/18/2021

I cannot get enough of these!!!

Reviewed On 12/29/2020

Have this base for over a year and I’ll tell you, it’s my goto piece. From spring turkeys and bear, to early fall elk into winter whitetail, I have this thing on all the time.
Fit is perfect. I’m 6’ 205# and wear a Large.
I’m going to pick up a couple more to have in different patterns.

William Workman
Reviewed On 12/13/2020

I am impressed. The fit is excellent. Not too tight, not too lose. True to size. Thumb loops are excellent, not too big or in the way.

Jim M
Reviewed On 12/08/2020

Fit is great per the Sitka size chart. Fit is snug as a long underwear base layer should be but not overly snug. This product seems more durable than similar products on the market and I believe posses the scent control qualities it claims. I have worn as a base under other clothes and as a stand alone piece and found it to be acceptable for both. Good moisture wicking capability you want out of a base layer. I would definitely recommend.

Reviewed On 09/22/2020

Excellent early season base layer. Perfect standalone 60+ degrees, wear a hoodie overtop if you get cold. Only complaint is when wearing alone, these things fray easily on any snags. Love this shirt overall for early season whitetails and will wear during spring turkey.

Reviewed On 04/07/2020

This is the most versatile base layer for any system. This core light top pulls moisture from your skin and wicks it away very fast. This keeps you from feeling wet underneath all your gear and regulate your temperature well. Anytime I know I will be exerting a lot of energy or I will be near water, I wear this base layer because I know if I sweat or get soaked while setting decoys I will be dry Within a few minutes.

roger hall
Reviewed On 11/15/2019

I finally broke down and went all in on the system, and I couldn't be more pleased. Except the price tag. But I have both the short and long sleeve t shirts and they are a must for your 1st layer. The sweat in the heat, or from layering up is quickly taken away. This shirt drives in almost seconds.

Dalton Hand
Reviewed On 09/22/2019

This is a must have item along with the lightweight base layer pants. After a week long early season elk-hunt, my shirt and pants barely even had a stench. It dries super quick and definitely controls odor!

Reviewed On 05/09/2019

This is a sweet comfortable base layer. It feels nice and soft and the fit is perfect. I'm 206lbs & 5' 10.5" and the XL is perfect. This shirt will be awesome in the heat for the the early season, and a great base to start the layer system. A++.

1 of 4
Adam Foss - 04.26.2019

A Tale of Two Roars

Rustic wooden gates groaned open as our Toyota HiLux rumbled through. We navigated the rutted, winding dirt road; every pothole and washboard negotiated revealing another layer of the towering Andes Mountains. A gin-clear river meandered through the valley floor. Willows on the cusp of fall color shimmered in the cool afternoon breeze. This was the start of the annual breeding season for red deer in northern Patagonia—also known as the roar.