This bamboo bundlers are an innovative take on traditional sleep gowns. The bundle keeps baby’s feet warm and tucked in, while a single snap releases the bundle for an easy flipback during diaper changes. 97% Bamboo Rayon, 3% Spandex. Breathable material. Designed for sensitive skin. Snap closures. To maintain the quality and feel of your bamboo clothing we recommend the following wash instructions: Cold water. Gentle cycle. Turn off agitator if that is an option. With like fabrics (bamboo only) Kyte BABY does not recommend using the dryer. We recommend hanging or laying flat to dry.