Waterproof Terry Mattress Protectors What it is¡ 1 Waterproof, 2 Anti-microbial dust mite barrier, 3 Breathable ¡°new-age¡± fabric (sleeps cool), 4 Super absorbent cotton toweling, 5 Elastic, fitted sheet style. What it does¡ 1 Fits any mattress regardless of thickness, 2 Stain proofs mattress, 3 Protects mattress warranty, 4 Provides an allergy and stain free sleep environment. Warranty 1 Style A can survive after the washing test at 60¡æ for as many as 60 times! 2 Style B can survive after the washing test at 90¡æ for as many as 60 times!