Comprehensive Set: The package includes 1 helmet, 1 pair of knee pads, 1 pair of wrist guards, and 1 pair of elbow pads to provide effective protection while ridingQuality Material: This Kids Bike Helmet is made from PVC material, offering breathability and comfort for long term useComfortable to Wear: The Teens Skateboard Helmet features a hollow design for breathability, with a soft interior lining to ensure comfortable wear during useWide Application: This Cycling Helmet set is great for various activities such as rock climbing, outdoor riding sports, skateboarding, roller skating, and morePractical Gift: This Gear set makes a practical accessory gift for boys, girls, teenagers, or friends who are into active sports or outdoor activities Specification: Material: PVC Size Chart: Helmet: 26cmx19.5cmx15cm/10.24inchx7.68inchx5.91inchHead Circumference:53cm/20.87inchKnee Pads 14cmx10cm/5.51inchx3.94inchElbow Pads 12.5cmx8.5cm/4.92inchx3.35inchWrist Guards12.5cmx9.5cm/4.92inchx3.74inch Package Includes: 1 Helmet, 1 Pair of Knee Pads, 1 Pair of Wrist Guards,1 Pair of Elbow Pads Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.