There is a chemical smell to them, I would wash a couple of times. Could be plastic they are in. Dimensions (Overall): 52 inches (L) x 28 inches (W) Size: Standard crib Pattern: Printed pattern Protective Qualities: Colorfast Bed Size: Standard crib Material: Textile 1: Microfiber Package Quantity: 2 Thread Count: Not Applicable Material: Polyester Care and Cleaning: Machine wash & Tumble dry "Twinkle Twinkle Little Star" script print in gray on a white background