1,top layer is 280g/m2 full terylene 2,middle layer is 220g/m2 fiber 3 ... /m2 non-woven 4,with zip for 4 sides Full zipper mattress cover for water bed mattress covers with ... tape-edge, zippered mattress cover, quilted mattress cover. Feature:1, mattress cover size is 180*200*20cm, or as ... clients requirement.4,Structure is top layer is 280g/m2 full terylene, middle layer is 220g/m2 fiber, and down ...