These disposable underpads provide great linen protection. The fluff underpads absorb up to a cup of fluid and are simple to replace when soiled. Available in large and small sizes, the large size works well for beds and couches and the small size is perfect for wheelchairs or car seats. The waterproof backing is polypropylene which is naturally skin friendly and fire retardant. These underpads have no plastic edges and are latex free.