R-Tek Pro vests are made for warmth and layering--without adding extra bulk--thanks to stretch side panels. Produced using Low Impact Technology (L.I.T. ) which uses less dyestuffs, thermal energy and water for enhanced softness, performance and after-care quality.. 7.1-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. Stretch binding at armholes and hem