These are roller shoes from the RipStik series, featuring self-powered LED lights that illuminate while in motion! These are roller attachments from Langs Japan, known for the RipStik Deluxe Mini, offering sports-quality shoes. They require no screws or screwdrivers and are size-adjustable, reducing the need for removal and attachment while out and about. You can attach them to your favorite shoes, allowing you to put on and take off the rollers anywhere. They can be attached to shoe sizes approximately 19-27cm (width 60-80mm). When attached to shoes, they transform your shoes into roller shoes. The wheels are self-powered, so no batteries are needed, and they light up while in motion. With one set, both adults and children can enjoy extreme sports. With the sports-quality RipStik Jets, you can perform tricks and naturally develop a sense of balance while having fun. - Brand: Langs Japan - Model Name: RipStik Jets - Color: Blue - Material: Plastic - Features: With straps My child no longer uses these, so I am putting them up for sale. Thank you.