Now in its 2nd generation with a new design of very durable more elastic one size fits all latex free tension bands. The Xtensor reverse grip strengthener rebalances the muscles of the hands making the extensors stronger while at the same time improving flexibility to the muscles in the palms with adjustable tension specific to each finger. This is an essential tool used by therapists worldwide to treat patients suffering with a wide variety of hand and wrist issues from hand trauma post-surgery rehabilitation and tennis elbow pain. The device is designed to seamlessly evolve with patients starting from any level by removing and adding tension bands as needed without having to remove the device.