Athletes and active folks - if you deal with knee pain or just want some extra support during workouts, these silicone patellar straps are seriously helpful! You get 4 in the pack (in black and gray), which is awesome because you can keep them in different places - your gym bag, car, home - and always have one when you need it. The inner diameter is about 2.6 inches with good elasticity, so they fit most people comfortably without cutting off circulation. Made from quality silicone, they're soft against your skin but provide solid support right below your kneecap where that patellar tendon is. They're perfect for running, basketball, volleyball, or any sport that involves jumping and landing. The ergonomic design actually stays in place during movement without constantly sliding down like some cheaper bands do. They're easy to clean and maintain, and the included waterproof bag is handy for storing them after sweaty workouts. Whether you're dealing with jumper's knee, general knee discomfort, or just want preventive support during high-impact activities, these straps offer that extra stability without being bulky or restrictive like full knee braces.