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With a gusseted no-bunch crotch and low-profile elastic waistband, the CORE Lightweight Bottom provides just enough warmth for when temps dip and dial up animal activity. Featuring permanent Polygiene® Odor Control technology to neutralize odor by stopping the growth of odor-causing bacteria and fungi. The CORE Lightweight Series is the next-to-skin layering foundation for SITKA Systems, actively moving moisture away from the skin while keeping the hunter dry and comfortable.
Product ID: #10063Men'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
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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.
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2. CHEST SIZE
Take measurement under armpits, around fullest part of chest and shoulder blades.
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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.
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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.
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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
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P/F
-
S/F
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E/F
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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.
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S/F - STANDARD FIT
Designed to accommodate layering for more versatility from early to late season climates.
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E/F - EXPEDITION FIT
Designed for maximum layering in the worst conditions. Cut roomier to accommodate additional layering underneath.

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: 4.6 oz. // Size: L
Fabric: Quick-Dry, Lightweight Comfort Stretch Knit (100% Polyester).
Low-Profile Elastic Waistband: In addition to a gusseted no-bunch crotch for optimal comfort.
Quick-Dry, Comfort Stretch Lightweight Knit: Stay warm when the temperatures dip.
Polygiene® Odor Control Technology safely neutralizes odor caused from sweat.
Imported
Technology

Product Comments
3 Reviews
Tribe Member Mark Kenyon - 02.26.2016
Here's to the Crazy Ones
"Here’s to those foolish few. Here’s to having deer on the brain from Valentine’s Day clear through the Fourth of July and on to Veteran’s Day. Here’s to dreaming big, working hard and getting after it. Here’s to the crazy ones." - Tribe Member Mark Kenyon
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This is the most versatile piece of Sitka gear I own. I wear these in the mountains chasing elk in Sept through the whitetail rut in November. They keep keep me warm in the mornings and evenings as the thermals change but don’t burn me up during the day. These are the first thing I pack on every trip. Whatever you’re buying, add these to the list.
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 would definitely recommend.
This is my favorite base layer and my go to for 95% of my hunts. These core light bottoms do a fantastic job of regulating temperature and moving moisture away from your skin. This is an incredibly versatile piece that I wear under waders chasing waterfowl, as my first layer chasing whitetails and turkey in the midwest, and in the high country on an early season mountain goat hunt.