Our Changing Pad Cover/Bassinet sheets are composed of a light, soft and breathable fabric. Tailored to fit snugly on standard bassinet mattresses and co-sleepers. Babies love our Bassinet sheets, as they offer a soft, welcoming texture that lulls them into restful sleep. Sweet dreams for all. Size: Fits standard Bassinet mattresses and co-sleepers as well as Changing Pad mats Material: 100% Natural Bamboo Muslin