Features Babyletto's mini crib sheets are consciously crafted from breathable and soft Gots-certified organic muslin cotton to ensure your baby has the perfect sleeping environment 100% organic cotton: Crafted entirely of preferred cotton fibers grown without chemicals, pesticides, or GMOs. Certified Gots (Global Organic Textile Standards): Meets stringent environmental criteria along the entire supply chain, as well as some of the world's strictest social responsibility standards Lightweight and breathable: Muslin weave allows for air to flow freely to reduce the risk of overheating, while still keeping your babe cozy Soft and strong: Durable muslin cotton withstands countless washes and softens with every cycle. Wash cold and hang or tumble dry low Snug fit: Designed for a 360-degree fit on a U.s. standard mini crib mattress (37.5" x 23.5"). Babyletto recommends their Pure by babyletto line of hypoallergenic and Greenguard Gold certified mini crib mattresses (sold separately) Lovingly designed by Clementine Kids for Babyletto to bring art that inspires and soothes to your nurserySpecifications Suitable for children from 0-3 months Compatible with the following (sold separately): Gelato 4-in-1 Convertible Mini Crib and Twin bed, Origami Mini Crib Manufacturer's 1-year warranty