The Dynaflex from Planet Waves is a tool designed to exercise and condition hands, wrists and forearms, increase hand speed and strumming coordination, and improve endurance.
![[NAMM] Dynaflex Conditioning Tool](https://img.audiofanzine.com/img/product/normal/9/8/98391.jpg?fm=pjpg&w=334&h=243&fit=contain&s=bf5c377134d3035cb4787b7ab10078a4)