Features: Adjustable Sizing: Our inline skates are available in S, M, and L sizes, each adjustable to ensure a perfect fit. Please refer to the attached size chart to choose the correct size. For best results, ensure the foot length is less than 1 cm longer than the skate length. Sizes are as follows: S (18-20.5 cm, suitable for 3-6 years old), M (21.5-24 cm, suitable for 6-11 years old), L (24-27.5 cm, suitable for adults). Complete Safety Set: Each pair of skates comes with a safety helmet, sliding protective gear, and 3 roadblocks. These accessories are designed to help prevent injuries from falls and assist children in practicing and improving their sliding skills. Convenient Adjustability: Easily adjust the length of the boots using the built-in buttons before wearing. This feature ensures that the skates grow with your child, providing long-term use as their feet grow. 8-Wheel Lighting: Our skates are equipped with four lighting wheels that illuminate automatically when skating. The lights are powered by the wheels, eliminating the need for batteries and adding a cool, glowing effect to your child's skating experience. Single Brake Design: The skates feature a single brake installed on the right foot to prevent the risk of falling backward during braking. This design enhances safety and stability while skating.