1) Waterbed thermal divider 2) For dual waterbed mattress 3) It can keep different ... : 6 monthsProduct Features:Premium waterbed vinyl DIN EN71-320 cm water filling depthWater Stabilizations: Freeflow, 20%, 40%, 60%, 80%, 100%Fiber ... Terry, Jersey, Tencel, Bamboo.Covers can washable in 60 degrees water Air divider for dual water bed mattress