Tenex Elbow Shock Absorber (ESA) is an elbow shock absorber that has been proven to help athletes with tennis elbow, golfers elbow and carpal tunnel syndrome. As the most effective shock absorber on the market, this wristband is perfect for sports and at the workplace. Tenex ESA is worn on the wrist and absorbs vibrations before they have a chance to impact on your wrist and elbow. Inside the chamber attached to the soft and comfortable wristband is a specially formulated liquid metal that produces a constant counter wave action to neutralize vibrations whenever you make impact. Tested at Massachusetts Institute of Technology (MIT), Tenex ESA is ideal for any activity that gives you elbow or wrist pain, but has been very popular with tennis players and golfers.