Bauerfeind Sports Knee Strap. Bauerfeind works with athletes to design the best products for athletes. The Bauerfeind range is made for the competitor who works equally as hard in training as in the game; made for the amateur or professional who wants improved performance.By studyi ng elite athletes; Bauerfeind sports scientists have created innovative protection for muscles and joints. The line of compression technology improves the flow of oxygen to the body for increased circulation; better endurance; less fatigue and quicker recovery time. Sits below the knee; with soft pad that reduces strain on the patellar tendon. Extra flat and adjustable. Anatomica lly designed for the perfect fit. 3D Airknit technology is light and breathable. For sizing: measure the circumfer ence immediately below the kneecap.