I'm using something similar to a quad cuff, but it's not one. I can handle weights, weight machines and the SCIFit trainers with it. I'll ask one of the trainers what and where to buy tomorrow.
Heavyhands slip onto your hand and have interchangable weights which go up to 10 lbs. Perfect for tetras. Much cheaper than that grasping glove, and you can do more excercises much more safety.
Comment