Our pajamas are made from buttery-soft and breathable bamboo viscose fabric that will keep your little one comfortable. The zippies feature a double zipper for easy diaper changes and fold-over cuffs and footies, making them grow with your child for many months! Zippies available in 3-6m, 6-12m, 12-18m and 18-24m. Sets available in 2T, 3T, 4T, 5T, and 6T. All styles run true to size and are made to be snug-fitting to meet CPSC compliance. - 95% Bamboo from viscose; 5% spandex - Machine wash cold, tumble dry low - No interior tags - Not treated with flame retardants