It is breathable cotton and has elastic all the way around ensuring a safe and secure fit on a standard sized crib mattress measuring 52” X 28”

The blocks do not slide off easily

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You truly are the best

Itzy Ritzy Diaper Bag Backpack - Mini Coffee & Cream Vista V2 It is breathable cotton andThe Mini Backpack Diaper Bag by Itzy Ritzy is the perfect size to grab and go for quick outings or when you only need to bring along the essentials. Dont let its size fool youthe mini backpack has eight pockets (four internal and four external) and includes a matching changing pad. It also features Itzy Ritzys signature rubber feet that protect the base of the bag from dirty surfaces and wear and tear. The comfortable backpack straps allow you to be