per with Ventilated Design, Removable and Washable Cover, No-Slip Design, Bed Topper Twin Size Twin 3 Inches Item Condition : Open Box - Not Tested Size: Twin UPC: B0BXXM3KQ5 Comfortable Mattress Topper - 2 layers construction of our twin mattress topper combines the softness of gel memory foam and supportive feature of memory foam, to give you the right amount of comfort, and extends the life span of your old mattress Easy Maintenance - With the zippered design, the cover of our mattress topper is removable and can be washed by your washing machine, which is easy for you to keep it clean and tidy Experience Better Sleeps - The memory foam can gradually adapts to the shape and weight of your body, offer you a personalized comfort.