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The Heavyweight Bottom is a foundational next-to-skin baselayer that keeps the lower limbs warm during long periods of frigid inactivity while wicking moisture when on the move. With a comfort stretch fleece for warmth and channeled construction for added breathability and moisture management, the Heavyweight Bottom is perfect for cold weather days spent in a layout blind, stand or glassing in the backcountry.
Product ID: #70015Men'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" |
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
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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: 9.15 oz. // Size: L
Fabric: Heavyweight Comfort Stretch Fleece (93% Polyester/7% Elastane).
Polygiene® Odor Control Technology safely neutralizes odor caused from sweat.
Quick-dry, Comfort Stretch Lightweight Knit: Stay warm when the temperatures dip.
Technology

Product Comments
4 Reviews
SITKA Team - 10.08.2019
The Necessities of Comfort: Gear Tips To Improve Your Next Hunt
Comfort can play a vital role in the hunt. Not in the sense that being comfortable makes the hunt easy, more that it allows us to shift focus from the challenges of the hunt to the task at hand. When we bring our bodies and minds to a state of comfort, we become more effective, more efficient, and more durable to the conditions. Comfort becomes a tool.
READ MORE
You get what you pay for!! Folks always talk about the price. If you're a couple times a year guy yeah it’s high. But if you're all season or yr round hunting it saves you time and money. I haven’t had to buy new camo in over 6 years. I bet if I take care of my stuff I bet I’ll never have to buy again. I used to have to buy new stuff every or every other just from how the cheap stuff fades and wears out. It’s simple math. Spend now and not have to spend later possibly ever again. The only time you’ll need to spend more is if you want to add to your collection.
They’re unbelievably comfortable. Sitka is worth the price. I am Sitka for life.
Sitka Price Stings a little bit but I’m slowly going all in on the whitetail system. In SW PA The weather is unpredictable and I wore these for a few hour sit after work on top of some UA ColdGear and didn’t even need my coveralls to stay warm in low-mid 20s I’ll definitely be adding the heavyweight top and the full Stratus Line for next season since there’s only 2 weeks left in the season here.
I finally broke down and went all in on this sitka system, and other than the price, I could not be more happier. The heavy weight bottoms I wore from mid October on as my next to skin layer. Mornings get a little chilly in ne Ohio and they did a surprisingly good job of wicking sweat. Warmer than my merino wools, I'm a freeze baby, and I will buy another pair if I wear these out.