Color: A / B / C / D Size: S (18-21cm) / M (21.3-24cm) / L (24-26.5cm) ★ Inline skates use "tires that can actually skate" and employ a lightweight and robust aluminum frame. This ensures safety and comfort. ★ No tools required! The frame allows for easy size adjustment with a push button, even for children. ★ One "single-foot brake" is included, which attaches to the heel. Use it on either foot as needed (generally the right foot). Materials: Tires: PU tires Inner: Breathable mesh, sponge, etc. Shell material: PP material Notes: ※ The light-up wheels generate power, so their rotation may be slightly heavier, but this does not affect skating. ※ Our company is not responsible for any accidents or injuries caused by the use of roller shoes. Please be careful when using them. Important notes: ※ Please note that the size is measured by hand, so there may be an error of 1-3cm. ※ The color of the product may differ slightly from the photos due to differences in the environment, such as photography and computer screen display. ※ An additional 3,000 yen will be charged for delivery to Okinawa Prefecture, Hokkaido, and remote islands. Please understand. ※ If you have any questions, please feel free to ask.