? Breathable Fabrics- Mixed fabric of polyamide and spandex, exquisite design technology, light smooth & high elastic fitting, rapid perspiration, drying and good breathable are useful to protect the leg and knee from pulling during in outdoor activities ? Non-Slip Inner Silicone Strip- Embedded elastic slip strip, prevent Leg Sleeve being loose when movement, and it is useful to coordinate muscle capacity and to protect the skin ? Comfortable Protection- A protective apparel made from high-density staple fiber textile to reinforce movement with less tension and strain, prevent injury, laceration, abrasion, and/or contusion ? Multipul Use- It is suitable for all outdoor activities and all kinds of sports, including ball games, basketball, badminton, football, tennis, running, martial arts, riding, skating and more ? Three Different Sizes- Kindly refer to size chart in product images. Please note that compression wear has a tight fit. For a less tight fit, please select the next size up