1. It is made of durable and soft filling material, equipped with hard plastic board and high-quality protective pad, the purpose is to provide safety and comfort. Sponge is non-slip, flexible material, breathable, odor-resistant, moisture absorption and perspiration. 2. Be able to protect your children from harm and give them safe and happy time. 3. The helmet is suitable for inline skating, skateboarding, cycling, scooter skating, scooter and other sports. Protective parts: elbow, head, knee, palm colour:Blue Material:EVA+sponge size:Head circumference: about 50-54cm Package Contents: 3 x Helmet 6 x wrist guard 6 x elbow guard 6 x knee guard Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.