The Buoy Bed XTRA Thick Foam Mattress swimming pool float is our thickest pool foam float at 2.25 inches – and is designed to not sag even under larger bodies. The vibrant coating on our foam pool lounger will not absorb water, and the fully enclosed foam construction is designed not sink. The vinyl is also makes our pool mattress easy to clean, and is sun, chlorine and salt water resistant. Our foam lounger includes an integrated pillow that adds extra buoy and head support.