This is a size L, but if you would like a size S (suitable for under 40kg) or a size L (suitable for 65-80kg), please write "Size O" in the comment section before pressing the purchase button. I will change it to a dedicated page. ★Instant purchase OK, no comment needed★ ★Free shipping nationwide without exception★ ☆Brand new, unused☆ Thank you for visiting our shop from among many others. We are selling at almost no profit, so we cannot offer any discounts for single items. However, we will offer a small discount for multiple purchases, so feel free to comment. These knee supports have built-in pads with excellent shock absorption to reduce the burden on your knees when receiving. They are perfect for not only volleyball, but also rhythmic gymnastics, ballet, dance, basketball, badminton, tennis, track and field, soccer, gym, walking, and other sports that use the knees, providing solid knee coverage and excellent injury prevention. Also, due to the simple design, they can be used in everyday life by both men and women (unisex). ◇Product Details◇ Unisex Knee Support Quantity: 2 pieces (one for each side) Material: Sponge, polyester cotton, elastic fiber Color: Black Size: L size *Suitable for approximately 65kg to approximately 80kg ★Flat size★ L Top width: 16cm Bottom width: 13.5cm Length: 23cm Pad Width: 12cm Length: 14cm 906 rep 091 big moto 329 Knee pad Jogging supporter Knee pads Knee pads Futsal Rugby Basketball Table tennis Softball Baseball Jogging Running Training Skiing Snowboarding Yoga Fitness Adult Children's