bianca smart-dry baby dry sheet is waterproof with breathable technology that allows air to circulate through the protector but repels liquids. it has a bamboo soft finish on top. it absorbs water & keeps baby skin dry for long hours - results in good night sleep!. it is ideal for use when putting infants to bed to protect your mattress against bed wetting. we offer various sizes to suit multiple usage & baby age. 80 x 56 in (L x W) dimensions : (L x W) : (XL) : 140 x 220 inch | (L x W) : (S) : 50 x 70 inch | (L x W) : (M) : 70 x 100 inch |