Material: 100% muslin cotton. Soft, breathable, and gentle on your baby's skin; designed to avoid irritation. Snug fit: Fitted with a elastic edge and extra stretch to securely fit the bassinet mattress; helps keep the sheet in place for safer sleep. Universal fit: Includes 2 fitted sheets, each measuring 33' x 17' x 4'. These sheets fit most oval, rectangular, and hourglass bassinet mattresses. Easy care: Machine wash on delicate cycle; muslin sheets become softer and more comfortable with each wash. The twopack set provides two sheets for use. Use scenarios Overnight sleep in a home bassinet: breathable, soft fabric with a snug fit helps create a comfortable and secure sleeping surface. Daytime naps or quick changes: two sheets in the set allow fast changes and easy rotation to keep a clean surface. Travel, hospital stays, or daycare: compact, fitted sheets that fit many bassinet shapes provide convenient, reliable coverage on the go.