Made from muslin cotton, our cozy, extra soft bassinet crib sheet is pre-washed for softness against baby's delicate skin. Muslin fabric stays breathable while keeping your baby warm and cuddly. The sheet is designed with full elastic edges for easy removal on rectangular bassinet crib-sized mattresses. It's pre-washed for softness and maintains a perfect fit after every wash. Sized to fit most USA bassinets, this sheet works best with oval, hourglass and rectangular mattresses sized 30"(L) x 16"(W) x 1"(H). breathable and cozy muslin cotton to keep your baby warm and cuddly. Stays soft after every wash. Wash the Bassinet Crib Sheet at max 30C (80F) and lay flat to dry. Do not tumble dry, bleach, iron or dry clean. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.