Zippy Sack—Marvel Avengers--used. Don’t make your bed, zip it up instead. Make your bed in seconds! Beds are always tucked in, neat, and made! Kids stay covered and cozy all night Fits all depth twin size mattresses Machine washable Perfect for Bunk Beds, camping & air mattresses See pictures. Great pre-owned condition. Remember to bundle for an automatic discount. We try our best to describe the items accurately, so you know what you are considering buying. If you need more information or would like other pictures, please send us a message. We will be happy to help you