Water bed mattress or water cushion has foil, where mattress or cushion is filled with liquid, and spherical pieces of gel are added to liquid, which float in liquid freely

摘要

The mattress and/or cushion have a foil, where mattress or cushion is filled with a liquid. The spherical pieces of gel are added to the liquid, which float in the liquid freely. The pieces of gel have a volume of one cubic centimeter. The pieces of gel consists a swollen bio polymer.