Unlike other arm slings that dig into your neck and are cumbersome to use, Think Ergo Arm Sling Air is ergonomically designed to adapt to the contours of your neck and shoulder, relieving pressure and helping you heal in maximum comfort. With vents throughout the entire strap, this arm sling is amazingly light and breathable. The strap’s cushy neoprene padding provides excellent shock absorption, so your arm doesn’t get jolted with each step or movement. The sling’s thumb loops provide added support to your hand to prevent fatigue. To make things easy, the length adjuster is located at the front, eliminating the need to take it off or have someone help you to adjust it. Everything about the Think Ergo Arm Sling Air was designed to minimize pain and help you be well on your way to a comfortable recovery.<br><br> Size: Adult (5' 2" - 6' tall, 90-225 pounds). One Size Fits Most. Arm Sling Air Instructions: 1) Take the arm sling out of the box and lay it on a flat surface, such as a table. 2) If you will be using the arm sling on your right arm, the opening of the arm pouch should be pointing to your left. If you will be using it on your left arm, the opening of the arm pouch should be pointing to your right. 3) Thread the strap through the loop and pull to tighten. 4) Put the arm sling on. The strap should be centered on your shoulder and the arm sling should be comfortably supporting your arm. To tighten, pull the strap at the front, or adjust it via the Tri-Glide buckle on the back.