Abstract: A float mattress having a center of gravity low relative to its center of buoyancy is disclosed. The mattress comprises a bag formed of meshed fabric and granular, buoyant material contained within the bag. In a body of water, the mattress is stabilized by water passing freely through the bag to displace air within. The meshed fabric has openings smaller in size than the size of the granules of the material to contain the granules while allowing the water and air to pass therethrough. The mattress may also include a storage pouch accessibly mounted therein and a removable pillow of similar construction to the mattress.