97% Rayon Made From Bamboo, 3% Spandex Designed to be soothingly warm Breathable material Designed for sensitive skin Machine wash in cold water with like materials. Hang dry. Avoid bleach to maintain the quality of the fabric. Summertime heat can make sleep uncomfortable for little ones. Crafted from rayon made from bamboo, these toddler pajamas include a short sleeve top and shorts. The soft, lightweight fabric is sure to keep your toddler comfortable and cool all night long.