This 100% cotton flannel onasti portable play yard sheet is made of the highest quality fabric that's double napped. That means these sheets are the softest and most durable. Sheets are made with deep pockets and are elasticized around the entire edge which prevents it from slipping off the mattress, thereby keeping your baby safe. These sheets are so durable that they will last all through your baby's growing years. We're called sheetworld because we produce the highest grade sheets on the market today. Features cars, trucks, buses, and more on a blue colored background. Size: 23 x 40.