Two sizes for adults and children: This set contains 2 * 21.6in switch leg straps and 2 * 17.7in leg straps,It has adjustable Velcro strap so you can adjust the length according to the size of your leg,adults and children can use it perfectly Compatible with sports games and ring fit adventure:This elastic band is compatible Nintendo Switch Game the Ring Fit Adventure and Nintendo Switch Sports Elastic Design and Breathablility Design:The elastic strap ensures that the leg strap will not slip off during use, and the breathability ensures your safety during exercise and can protect your skin. Lightweight and washable: The nylon material is used, which is very light to use. After you finish exercising, you can wash it repeatedly without affecting the use Family Entertainment Accessories: This set includes 4 leg straps to keep your whole family engaged in these sports games/ring fit adventure and other games... It is a great gift option.