| 摘要 |
A flexible, multicellular, flotable, water-repellant mattress having opposite complementary end surfaces of similar shape and size; and means for detachably coupling the end surfaces together to form a toroidal shape with the mattress. The mattress has a length about three times its width, and may be an inflatable raft or a foam slab. The coupling means may be a means for lacing the end surfaces together, or interengaging fastener members, such as a zipper or Velcro fastener members. The novel mattress can be used flat or with the end surfaces coupled together in a multiplicity of uses on land or floating on the surface of a body of water.
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