Meet the IronMind Twist Yo’ Wrist: a fitness tool that takes your lower arm training to the next level. It can work your elbows to your fingertips. It focuses on a thumbs-up position. It comes with a 4″ polymer roller with 4′ climbing-grade cord.
The IronMind Twist Yo’ Wrist is ideal for climbers, arm wrestlers, and martial artists. You can find out more about it here.