Color:Vintage Nautical Map Blue Crib Sheet - Baby Boy Crib Sheet Your baby is unique. How about getting some crib sheets that are special, too? Add personality and sweetness to your nursery with beautiful 100% cotton crib sheets! These sheets are fitted with braided elastic for a perfectly snug fit to keep baby safe. The corners are sewn with a serger, which prevents fraying and means you can wash it over and over again without worrying.