30x34 inches. Keeps sheets dry all night. 3 layer protection. Goes over the bottom sheet to protect mattress and sheets from staining. Machine wash and dry-bleachable. No more middle-of-the-night bed stripping. Simply replace the Priva sheet protector with a fresh one in seconds! Soft quilted cotton polyester surface, inner absorbent layer and a 100% vinyl waterproof backing. Soft quilted cotton and polyester. Super absorbent high density inner layer. Non slip backing. 100% vinyl waterproof backing. Made in China.