Heavyweight Bottom
Heavyweight Bottom
Heavyweight Bottom

Heavyweight Bottom

  • Waterfowl : Waterfowl Marsh
(7 Reviews)

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: #70015

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 Waterfowl Marsh is designed for layout and blind hunting in the marsh, standing crops, and cut stubble fields.

  • 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.

  • Imported

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



Product Comments

7 Reviews
Write a Comment
Robert Thomas
Reviewed On 06/26/2021

These basel ayers are bad to the bone. They kept me extremely warm this past season with all the crazy cold weather we had. I highly recommend them for extremely cold weather or if you sit for any prolong period of time with not much hiking. I hike mountains and it was a bit to much while hiking even though it was single digits and about a foot of snow on the ground.

Andrew Abraham
Reviewed On 04/01/2021

Love these!

Reviewed On 03/21/2021

Being a Minnesota boy I know the importance of a good base layer. These are really nice. They breath well during walks to the blind and then distribute the sweat, and keep me warm during the long sits. You will not go wrong with these base layer pieces.

jacob rutz
Reviewed On 11/29/2020

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.

Reviewed On 05/04/2020

They’re unbelievably comfortable. Sitka is worth the price. I am Sitka for life.

Reviewed On 01/13/2020

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.

roger hall
Reviewed On 11/15/2019

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.

1 of 2
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.