FLEXIBLE STRETCH SIDES
Thinner depth mattresses are less common so standard size are too big, this size uses a unique spandex stretch side so it will fit properly and snug with all depths 3-8 Inches COMPLETE PROTECTION
This is not a fitted sheet style cover. This covers zips closed on all 6 sides & protects your RV and camper mattress from Dust, Pet Dander, Pollen, Liquids or whatever nature sends your way QUIET & COOL
Unlike vinyl or plastic backed products, the Allersoft's soft poly knit fabric maintains a cool temperature and will not rustle under the sheets LOCKING ZIPPER
Patented secure locking zipper which seals off the mattress from anything outside. Zipper has auto lock tab and Velcro seal over the zipper when closed ALLERGY RELIEF
The special barrier in this fabric shields you from irritating allergens that can sneak into the deep layers of your mattress. Sleeping on an unprotected mattress exposes you to all different types of allergens RV 6 Sided Zippered Mattress Protector with Secure Locking Zipper for 30x75 RV Bunk. Unique stretch sides will fit depths 3-8 Inches