





To be notified when an out-of-stock product is available, please select your size and click the "EMAIL ME" button.
The Grinder Half-Zip was born to pull double-duty for waterfowl season. Worn between a next-to-skin layer and a shell for core insulation or as a breathable, water and abrasion-resistant outer layer. Lofted fleece adds comfortable warmth during long sits in the blind, yet, still breathes during active work setting up decoys while retaining stretch for complete range of motion.
Product ID: #70020Men'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
-
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.
-
2. CHEST SIZE
Take measurement under armpits, around fullest part of chest and shoulder blades.
-
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.
-
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
-
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.
-
S/F - STANDARD FIT
Designed to accommodate layering for more versatility from early to late season climates.
-
E/F - EXPEDITION FIT
Designed for maximum layering in the worst conditions. Cut roomier to accommodate additional layering underneath.
GORE™ OPTIFADE™ Concealment Waterfowl Timber is optimized for engagement distances of 10 to 40 yards in the darker environments of flooded timber.
Fabric: Water Repellent Heavyweight Comfort Stretch Fleece (93% Polyester/7% Elastane).
Polygiene® Odor Control Technology safely neutralizes odor caused from sweat.
Technology


Why We Made This
Hunters have been looking for a durable lighter-weight insulation piece to get them through the rigors of waterfowl season. Our approach was to use the combination of lofted fleece for the interior to deliver core-warmth and superior abrasion resistance technology on the exterior for ultimate durability. A DWR finish provides water resistance from light precipitation that won’t wet-out the face fabric. The high collar delivers warmth and shelter from the wind while the half-zip design won’t interfere with your shots when the birds are in sight.
Product Comments
2 Reviews
John Stephens | Photos By Steven Drake - 09.25.2019
Following the Call: Honoring a Waterfowl Tradition
My love of the history and tradition of the American duck call goes way back. I was eight years old when my parents handed me an old shoe box of calls that had once belonged to my grandfather and his brother. The calls fascinated me, and it wasn’t long before I started my own vintage collection and began attending duck calling competitions. Eventually, I was spending what would become invaluable time with Butch Richenback at his Rich-N-Tone Duck Call shop here in Stuttgart, Arkansas, learning everything he had to teach me.
READ MORE
Another great "base layer" from Sitka. This piece is utilized on all hunts, but the earliest of the season. A very comfortable, soft layer that moves with you. No binding. No cinching. Really nothing else to say for it as it is a basic piece. However, it is a piece of the "system" that truly helps keep you out there throughout the season!
In one word... Magic! Somehow this shirt keeps me warmer on cold days and cooler on hot days. My Grinder half zip is worn every opportunity I get, the most comfortable garment I own, even with the zipper against my bare skin. Love the thumb loops for layering without dragging the sleeves up my arms.