Greenco Premium Hypoallergenic Waterproof Sheet Protector, 34 x 52" 8 Cups Absorbency, 300 Machine Washes 50% Cotton, 50% Polyester Four layer protection: soft quilted Cotton/polyester surface, soft polyester fiberfill layer, super absorbent high density inner layer, and a vinyl waterproof Non slip barrier Generously oversized at 52" long to provide maximum protection; Absorbs quickly and locks in moisture for the best in skin care up to 8 cups Goes over the bottom sheet to protect mattress and sheets from moisture and staining Repels all liquids including bodily fluids, perspiration, urine and accidental spills Up to 300 Washes- Washer and Dryer friendly, bleachable