Implementing three forms of technology, this mattress-protecting cover guards against sweat, leaks, and spills. Three uniquely innovative technologies converge, as microscopic pores allow air to permeate the cover whilst blocking larger molecules like liquids, viruses, bacteria, dust mites, and allergens. The breathable and noiseless mattress protector will keep your mattress fresh and dry while helping to prevent the buildup of allergens. FeaturesMaterial: TencelUses Omniphase, Tencel, and H2PRO technologiesProtects against bed bugs, liquids, dust, and moreWaterproofHypoallergenicMachine washableSee below for more detailed specificationsDimensionsTwin: 39 inches wide x 75 inches longTwin XL: 39 inches wide x 80 inches longFull: 54 inches wide x 75 inches longFull XL: 54 inches wide x 80 inches longSplit Queen: 30 inches wide x 80 inches longQueen: 60 inches wide x 80 inches longSplit King: 39 inches wide x 80 inches longKing: 78 inches wide x 80 inches longSplit California King: 36 inches wide x 84 inches longCalifornia King: 72 inches wide x 84 inches long