Set Includes Crib Sheet Features Lightweight and breathable, this super-soft sheet offers the optimal combination of durability and stretch With on-trend designs for the modern nursery, it's fully elasticized to ensure a tight fit on all standard baby mattresses Lightweight and breathable High quality elastic stitching around the entire crib sheet ensures a tight fit that looks clean and modern Premium knit fabric Universal fitSpecifications Compatible with the following (sold separately): Designed to fit all standard baby mattresses; Fitted sheet fits crib mattresses up to 9" deep Manufacturer's 6-month limited warranty