1.Knee Pads Material: Cotton high elastic sponge with non-slip rubber particles on the surface. Protect the knee well. 2.Fits Most Babies:The knee pads perfect for most unisex babies (6-24 Months). Kneepads circumference approx 15 cm/5.9 inches (unstretched). Overall size 13.5 cm/5.3 inches - 7 cm/2.8 inches (L x W). Round pad (in the middle) diameter 7.5 cm/3 inches. 3.100% Protect & Avoid Scratches: Our crawling knee pad can protect your babys knee from bruises and scrapes when they get ready to learn craw and walk. The silicone pattern helps babies to move steadily. 4.Elastic and Extensible:The material of baby knee pads has high elastic so they can fit the baby leg perfectly. They are breathable, absorb sweat, durable and soft to wear. 5.Package Includes:5 Pair Knee Pads(Hand Wash Only)