AB Lifestyles 30x75 Waterproof, Dust Mite Proof Mattress CoverAll for a Bunk/Single bed in Camper, RV, Travel Trailer or Motorhome Cotton Water Proof & Dust Mite Proof Mattress Covers for your camper, RV or Travel Trailer mattress that are SUPER QUIET! No crinkling noises like with vinyl covers! Size: 30x75 Bunk Made of a specially made fabric that is super absorbent on top, and backed with polyurethene to prevent moisture from penetrating Machine Washable hundreds of times! Proudly Made in the USA!