From the original TOUGH-1. Medium/Lightweight. Designed without a back seam to prevent leaking. Made of 420 denier ripstop poly outer shell with waterproof 210 lining, 200 grams of poly fill. Fleece wither protection. Crossed surcingles with elastic ends. Adjustable leg straps with elastice ends. Double buckle front. Shoulder gussets allow freedom of movement. JTW5176855