40 inches. the crib skirt has a 15 inch drop, and the fitted sheet is designed to fit a standard size 28 inch x 52 inch crib mattress. the set is made of 60% cotton and 40% polyester. care instructions: machine wash warm, tumble dry low, and use only non-chlorine bleach when needed. around the cosy, central open fire creating subtle hums of conversation. all in all, this welcoming den makes for a good night, regardless of whether you're looking for a quiet night "in" catching up with old friends, or a platform to kick off your night on the town. 