Elastic,Cotton Pull On closure Hand Wash Only Material: cotton, soft, breathable and comfortable Design: Baby Kneepad Protector Socks is suitable for babies to crawl and learn to walk. The size is suitable for most babies, with rubber particles on the surface, non-slip. Can protect the knee well Features: 5 pairs/set. Delicate and comfortable, soft and skin-friendly, very durable. Elastic knee pads can protect the knee joints of the legs and keep the joints warm in winter. Venue: suitable for families, outdoors, parties, schools and other places. Cleaning: It can be washed in the washing machine or by hand. Don't bleach.