Our super twill PVC reusable underpads meet all industry standards. These are made of the finest quality 55/45 CVC heavy weight 4.1 oz twill face fabric. Soak-ers are 95% Poly/ 5% Rayon and come in 6, 8 and 10 oz . The Vinyl barrier is tested to last through multiple wash and dry cycles while still staying soft and leak-proof.