Features: Pure cotton design: These crib sheets are designed in pure cotton to protect the baby's sensitive skin and remain safe and soft. Flexible design: These daycare bed sheets are designed to be flexible and can be adjusted to match any mattress up to standard size. Specifications: Material: cotton Quantity: 20 pcs Colors: blue Size: 24 x 48 x 3 inches Notes: Manual measurement, please allow slight errors on size. The color may exist slight difference due to different screen displays.