Uboxes Twin Size Mattress Covers, 40" x 12" x 86", Clear, 2 Pack TWO Twin Size Mattress Bags-- One for the Box Spring and One for the Mattress Each cover is 40"x15"x86"-- 15" in Height to fit Pillow top mattresses with ease! Made of 2 mil poly material, Water resistant and Tear resistant! Sealed on three sides and opened on one end which can be sealed with tape--slips over the mattress like a pillow case! Great for protecting your mattresses while in transit or in storage! Don't make your move with out these!