Keep your little ones safe in bed with the Bluestone Toddler Foam Bed Bumper. This bed bumper for toddlers and babies is made of polyurethane foam with a water-resistant, fire-retardant cover, providing a soft layer of protective edging to keep your child comfortable and positioned appropriately. The cushion bumper's semicircle design and non-slip bottom let it slip easily under fitted sheets, making it great for toddler beds and most regular beds from twin up to king-size.