It’s peace of mind for you, easy wear for your dog. Get a great fit and have the best looking dog on the water. Rock Lockster® side release buckles, hidden D-ring attachment point, low profile assistance handle, Volara foam buoyancy cells. Low light luminescence reflective trim, 1680 denier ballistic nylon for strength, and bright colors to keep your dog in plain sight. Who’s the coolest dog at the beach now! Features Thick Volara foam panels 1680-denier ballistic nylon shell Contrasting dual color panels Highly reflective trim at side and top Low profile assistance handle for easy lifting Hidden D-ring attachment for a leash Integrated "Light Loop" for attaching a safety light like The Beacon "Rock Lockster" side release buckles Variable thickness buoyancy cells Ergonomic fit Measure your dog's girth to order correct size. X-Large fits dog with girth of 35-48".