Ace is a brand name for support devices manufactured by 3M. Ace provides elastic compression bandages, wraps, hot and cold therapy products and braces. Tennis elbow is a form of tendinitis that can occur due to repetitive motion. When you feel pain that radiates from your elbow to the forearm and wrist, this may be tennis elbow. It is essential to see your doctor for a proper diagnosis. If you have tennis elbow, applying an Ace brace to the forearm supports the tendons and allows for proper healing.