Mueller Jumper's Knee Strap The Mueller Jumper's Knee Strap applies uniformed pressure on the patella tendon just below your kneecap to help relieve pain during frequent running or jumping. This adjustable strap is designed to improve patellar tracking and elevation by applying mild pressure on the tendon below the kneecap. This helps to reduce the effects caused by frequent running and jumping and provides relief from patellar tendinitis. The Mueller Jumper's Knee Strap is designed to relieve pain in the kneecap caused by frequent running and/or jumping. It has been designed to improve patellar tracking and elevation by applying mild pressure to the patella tendon just below the kneecap. These knee straps are designed as a one size fits most product, are fully adjustable and can fit either knee. Who Would Benefit from the Jumper's Knee Strap? The Mueller Jumper's Knee Strap is ideal for active people who do a lot of running or sports that contain a lot of jumping or high impact movements. The strap applies uniform pressure to the patella tendon just below the kneecap, which helps to relieve pain. It is ideal for pain relief of conditions such as patellar tendinitis or chondromalacia (also known as jumper's knee). The strap has been treated with an antibacterial treatment which helps to protect against odour, staining and deterioration, so it is durable and long-lasting, and free of unpleasant smells.