The Little Green Sheep Waterproof Snuz Pod 4 Mattress Protector is made from a breathable and extra absorbent luxury cotton, creating a dry and safe sleep environment for your baby. Features: Extremely soft without the plastic feel of other mattress protectors Luxury cotton layers absorb any accidents Helps provide baby with a dry and comfortable nights sleep Waterproof layer crafted from Oeko-Tex Class 1 (Baby) waterproof membrane Protector is flat not fitted, letting your mattress breathe from sides & underneath Versatile: Can be used at home to help with potty training External: 100% Organic Cotton Internal: 100% Polyurethane Membrane Machine washable and tumble dryer safe Dimensions: Size: 75. 5 x 40cm