From the original TOUGH-1. Medium/Heavyweight. Designed without a back seam to prevent leaking. Made of 600 denier ripstop poly outer shell with waterproof 210 lining, 250 grams of poly fill. Fleece wither protection. Crossed surcingles with elastic ends. Adjustable leg straps with elastic ends. Double buckle front. Shoulder gussets allow freedom of movement.