Features: 1. High Quality Materials: PC shell EPS inner layer sweat-absorbing chin pad imported EPS foam lighter and stronger insect-proof net design soft and comfortable lining removable lining easier to clean. 2. Safe Helmet: One piece molding shockproof cushion protect the head helmet one piece molding more solid protect the head more in place. Multiple ventilation holes multi-angle fast ventilation not stuffy more comfortable riding. 3. Humanized Design: Humanized head knob adjustment design free adjustment suitable for a variety of head circumference of the child a better fit give the child more protection. 4. Other Advantages: Sweat-absorbing chin pad double-layer webbing adjustment buckle sweat-absorbing while protecting the chin more comfortable chin when riding so that the child play happy. 5. Applicable to: A variety of scenes sports safety is important helmets can not be less children can wear when riding bicycles small mobility scooters running bicycles roller skating skateboarding running. Specifications: Material: PC shell + EPS inner layer Color: Sky blue red dark blue Size: Size Applicable Head Circumference(cm) XS 47-52 S 51-55 Net Weight: About 210g Notice: 1. Due to different monitors and lighting effects the actual color may be slightly different from the image. 2. Due to manual measurement please allow 1-2cm deviation. includes: 1 *Helmet "