Review on PISIQI Knee Sleeve with Compression and Collision Avoidance by Gary Newman

This is fantastic protection from accidental bumps. I wear them for karate and kobudo and they protect my knees very well. In fact, they are not designed for kneeling. They might be fine when on your knees, but wear out pretty quickly if you spend a lot of time on your knees. For tasks like this you really need something with a hard outer shell and a thick gel inner layer. The hard shell allows it to withstand a lot of wear and tear without breaking and the gel is more resistant to constant pressure. These are foam pads that deform under constant pressure over a long period of time. But if you need to protect your knees in volleyball, basketball, karate or any other similar sport, I expect they will suit you.