Getting good sleep is important at any age, especially for babies. Made from 100% certified cotton this fitted sheet is hypoallergenic and soft to the touch. This 100% breathable sheet is made from pure-air breathable technology, which helps regulate temperature by promoting airflow throughout the entire sleep surface. All of our mattress sheets are 100% and machine-washable for easy cleaning. Fits standard-sized cribs. This fitted sheet fits standard mattresses. This breathable mattress sheet helps your baby regulate temperature by allowing air to pass through the sheet for a “breathable” night of sleep. This cover is hypoallergenic, wet-resistant, and maximizes airflow for babies.