The Onyx Outdoor Black M-24 In-Sight Manual Inflatable Sup Belt Pack with Hydration Pouch has a low profile that does not inhibit movement. The belt and pouch are U.S. Coast Guard approved Type III life jacket and combines a life jacket and hydration into one. For comfort the belt and pouch have an air mesh and padded material next to the skin. In-Sight shows Green if the product is properly armed and ready to use; shows Red if not ready to use. It comes in black and a one size fits all Universal. Easy one handed operation to get to your water bottle.