Waterbed mattress having an enclosure for holding a body of water for buoyantly supporting a person resting on the mattress, and a body of crumpled plastic netting within the enclosure for reducing wave action in the water and providing additional support for a person resting on the mattress. The crumpled...http://www.google.sh/patents/US5406660?utm_source=gb-gplus-sharePatent US5406660 - Waterbed mattress with plastic netting fill
