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). 3.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.Easy to Clean: Machine washable or clean by hand. Don't bleach.5.Suitable for family, outdoor, party, school and etc. Elastic knee pads can protect the legs/knee joints and keep warm in winter, which is soft and comfortable.