The Grinder Zip-T is built with water-repellent, heavyweight fleece insulation that keeps light rain out and provides warmth and comfort while layering. Offset seams on the shoulders improve range of motion and comfort while wearing a pack or hauling decoys, and thumb loops keep sleeves in place when layering under jackets. The half-length, center front YKK® zipper assists with venting and easy donning and doffing while Permanent Polygiene® Odor Control Technology neutralizes odor by stopping the growth of odor-causing bacteria and fungi during the long hike in. The Grinder Zip-T is a workhorse for repelling moisture and providing concealment as an outer layer while also maintaining body warmth as you add layers throughout the season.