This is the Akona Skin Suit Lycra Back Zip UV Protective Dive Suit Scuba Diving Snorkeling Features: Unisex design Maximum comfort in tropical environments Great for layering as an undergarment Provides protection from the sun 10 oz. (283.5 g) polypropylene with soft brushed lining Durable flat-lock stitched construction Ankle and thumb stirrups to prevent suit ride-up Heavy duty back zipper closure w/pull-tab leash Easy donning and doffing Fast drying material Non-buoyant fabric Color: Black w/silver stitching Model # AKSS156 The Akona Skin Suit provides maximum comfort for tropical environments. Has a comfortable fit to use alone or as layering garment. Wearing a skin suit under your normal exposure suit can keep you much warmer than without. The Skin Suit retains the water that enters your wetsuit and keeps it from flushing out, thus helps retain your body heat. The non-buoyant material allows you to maintain your current dive weight requirements.