Bauerfeind Sports Compression Arm Sleeve - Short. 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. 3D Airknit technology is light and breathable for heat control. Anatomically designed for the perfect fit; with sof t inner elbow. For sizing: 1) with your arm bent; measure the circumference of your arm below the armpit; 2) measure the c ircumference at the thickest part of the biceps; 3) measure the circumference at the thickest part of the forearm.Short sl eeve fits 15 1/2 -17 1/2 inch.