R-Tek Pro vests are made for warmth and layering--without adding extra bulk--thanks to stretch side panels. Plus, R-Tek Pro resists pilling and incorporates Low Impact Technology for enhanced softness and performance. 12-ounce, 100% polyester R-Tek Pro fleece. 88/12 poly/spandex side panels. Reverse coil zipper with chin guard. Zippered chest pocket. Front zippered pockets with zipper garages. Elastic binding at armholes and hem.