HEALTH MATERIAL:The main material of this product is high quality cotton, safe and comfortable, breathable and environmentally friendly and can be used all year round.Anti-slip design: the knee area has a non-slip and wear-resistant silicone pattern, which is perfect for crawling and running. There are elastic bands on both ends, whose size can be adjusted.Multifunction:Baby knee pads are well breathable, can absorb sweat and can be used repeatedly. They protect baby's knees well from bruising and scratches.Applicable occasions: when entering or leaving supermarkets, playing in the park, changing nappies, restaurants, air-conditioned buses, subways, planes and other air conditioning places.