This simple, yet effective product is the ultimate tool for hand, finger, wrist and forearm strengthening. The patented formula makes it great for rehabilitation and supports hot/cold therapy. The intuitive design allows for extension and eccentric exercises that treat common ailments and feels comfortable in your patient's hand. The built in recovery is perfect for optimal form and exercises are so natural, patients may forget they are doing therapy. The Xtrainer is also a great alternative to putty because it is easily cleaned between patients.