The Wateraft GEN614 is made of marine-grade polyethylene foam which requires no air or additional flotation attachments to work. Our Waterafts were designed to offer the user a safe and fun experience without any hassles. There are no ladders, sharp edges, or metal fasteners to worry about. All rafts are lightweight, easy to transport by hand or on your boat, and will not retain water. You just unroll and get on the water!