This is a new Lock-Up Standard Total Encasement Mattress Cover.  Size: Full-XL (54"x 80") Features: Smooth surface with waterproof top.  Trapped bed bugs are "locked-up" while invading bugs are "locked-out" Breathable to reduce heat build-up Double zipper provides added protection against bed bugs Provides allergen protection for a healthy sleep environment Soft fabric provides quiet, comfortable and sound sleep Certified for bed bug and dust mite protection Expands to 14" high.