To order this item, please add only even quantities to your cart and proceed through the checkout process. 20.5 in. x 33 ft. = 56 sq.ft Prepasted - Washable - Strippable Young in years or young in spirit, the vivid gleeful designs found in the Young at Heart Wallpaper Collection by York Wallcoverings will delight the senses and cheer not only the child you love, but also the child in you. Manufactured on SureStrip, a unique high performance substrate, this ultra-easy removable wallpaper is guaranteed easy to install and easy to remove; simply use water to activate. Mermaids Wallpaper is a sweet undersea print featuring graceful naiads, with long flowing locks, among the fishes, sand dollars, starfish, and seaweed.