Sitka Heavyweight Bottoms - The Sitka heavyweight hunting bottom provides a warm base layer for those long rest periods while wicking moisture during more active times. The comfort stretch fleece and channeled construction make for a warm yet breathable base for cold-weather treks through the backcountry. GORE OPTIFADE Concealment Heavyweight comfort stretch fleece fabric is 93% polyester/7% elastane Polygiene Odor Control Technology keeps hunters smelling fresh Lightweight knit dries quickly and allow for comfortable range of motion Style: 70015