R-Tek Pro vests are made for warmth and layering without adding extra bulk thanks to stretchy 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. Gently contoured silhouette. Reverse coil zipper with chin guard. Front zippered pockets with zipper garages. Elastic binding at armholes and hem.