PREMIUM QUALITY — Nylon II neoprene material forms to your body like a second skin. ULTRA FLEXIBLE — Super-stretch armpit panels make for easy mobility. PREVENTS CHAFING — Flat-lock stitching prevents skin irritation. LASTING DURABILITY — Anti-abrasion shoulder pads withstand wear from straps and other equipment. EASY DONNING AND DOFFING — Extra long leash and a YKK zipper for comfort and convenience.