Advocate Disposable Underpads are soft, durable & flame retardant. Each underpad is 23" x 36" and constructed from superior quality and highly absorbent polymer with soft fluff fill. Our underpads are waterproof with a non-skid blue backing and are sealed on all four sides to prevent leakage. Advocate underpads are folded and vacuum packed in bags of 50. · Soft, durable & flame retardant · High absorbent with polymer, soft fluff fill · Waterproof, no-skid blue backing · Sealed on all four sides to prevent leakage