Fits a standard crib mattress measuring 28" x 52 Easy-fit crib sheet, 100% cotton fabric Reinforced corners for secure and tailored fit Machine washable Nursery essential for expecting parents Your little one will have many sweet dreams on this adorable crib sheet from Gerber featuring a calming gray dots. Each sheet is carefully crafted with 100% cotton-fabric and reinforced corners for a snug and secure fit. Mix and match with other coordinating sheets and essentials from Gerber to get the essentials you need and create the nursery of your dreams