7 Piece Set1 x helmet, 2 x wrist guards, 2 x elbow pads, 2 x knee pads, It will provide full safety protection for your kids when doing outdoor sports. MaterialThe skateboard helmet adopts tough ABS shell with soft EPS liner which can absorb external pressure caused by impact in skateboarding activities.Multiple adjustable elastic straps and self-adhesive fasteners magic for a secure fit for different knee circumferences. AdjustableOur kids bike protective helmet is adjustable, and the knee pads, elbow pads and wrist pads have adjustable velcro and elastic bands. It can be flexible to fit different sizes of knee, elbow, wrist and children of different ages. BreathableThe joint protection and the bicycle helmet are breathable. The bike helmet features 11 ventilation holes to allow airflow and keep your head cool. A special multi-vented design and breathable foam helmets and pads help kids feel cool and comfortable even during intense body movements. We specialize in protective equipment for children and adults. The helmet and protective sets will provide comprehensive safety protection for you and your children. As the size above is measured by hand, the size of the actual item you received might be slightly different from the size above. At the same time, please be reminded that due to lighting effects, monitor's brightness and contrast settings, there may be slight differences in reality. Material: ABS outer shell + high density EPS inner shell Adapted Sport Inline Skating, Skateboard, Riding Bikes, Roller Scooters, Inline Skating, Motorcycle, Bicycle.