Sitka Grinder Half Zip Optifade TimberThe 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. Features: Fabric: Water Repellent Heavyweight Comfort Stretch Fleece (93%