Please feel free to ask any questions in the comments. M size. SOHAPI Inline Skates Inline Shoes Roller Skates for Adults and Children, Junior Rollers, Rollerblades, Girls, Boys, Beginners, Durable, Breathable, Safe, Silent, All Wheels Light Up, 4 Size Adjustable, Bag Included [Product Details] Material: Lining: Sponge, Support: Aluminum Alloy, Wheels: PU, Bearings: ABEC-7. Made of environmentally friendly materials, soft sponge and mesh, it is comfortable to wear and has excellent breathability. It is more hygienic and does not cause foot odor. It is very durable and lightweight, so you can use it with confidence. The aluminum bracket ensures smoothness while withstanding a lot of pressure. You can concentrate on free line skating with more peace of mind. Excellent breathability, comfortable even after long hours of use without feeling sticky from sweat, providing a smooth and comfortable fit. [One-touch 4-step size adjustment] Three sizes: S (30-33): Inner size 19.0-21.0cm, M (34.0-37.0): Inner size 21.5-23.5cm, L (38-41): Inner size 24.5-26.0cm. Possible in 0.5cm increments within the corresponding size, in 4 steps. No tools required, you can change the size in 4 steps with the PUSH button, easy to adjust, suitable for children during their growth period! Also comes with a storage bag, making it convenient to carry. [Triple Protection for Users & All-Light-Up Wheels & Right Foot Brake] Triple protection system, standard safety buckle & Velcro & shoelaces, thick cushioning protects the ankles from painful blisters and impacts, maintaining safety and comfort. Wheels that do not require charging sparkle when they spin ★ They shine and look cool when skating! Design with 8 light-emitting wheels. According to the habit of exercise, the left foot supports the weight, the right foot has an independent brake, easy to use and safe. [Stability, Silence, Durability, Breathability, and Lightness] The surface of the inline skates is designed to withstand high-strength impacts, using shock absorbers to prevent vibration and provide stability. Ensures safety and comfort. The structure of four inline skates in a row uses ABEC-7 bearings, which have the highest precision in the practical range, ensuring high safety and a smooth experience.