FingerWeights are a weighting device that straps or slides on each finger used to strengthen and condition the extensor and flexor muscles, the fine motor muscles of the hands responsible for finger and thumb movement. The extensor muscles are used to open the fingers and are the speed muscles that take you from one note to the next. The flexors close the fingers and are muscles employed for pushing movements. The additional mass on the fingers when training isolates the precise muscles and tendons used for the targeted activity. The benefits of training with FingerWeights extends to the wrists and forearms. FingerWeights are guaranteed to improve performance, prevent injury and rehabilitate.