From Lambs & Ivy, this crib sheet features: Breathable 100% cotton Get ready for an action-packed dinosaur dreamland adventure with adorable watercolor on a soft creamy white ground Fully elasticized to ensure a more secure fit on a standard-sized crib mattress  Fits approx. 28" W x 52" L crib mattress  Care instructions Machine wash gentle cycle Laundry bag recommended Don't overcrowd washer Dry on low heat Imported.