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 worlds strictest social responsibility standards LIGHTWEIGHT BREATHABLE Muslin weave allows for air to flow freely to reduce the risk of overheating while still keeping your babe cozy SOFT 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 US standard mini crib mattress 375 x 235 We recommend our Pure by babyletto line of hypoallergenic and GREENGUARD Gold certified mini crib mattresses