FitBeast Flex Therapy Bar, Tennis Elbow Therapy Bar – Ideal for Relieve Tendonitis Pain & Improve Grip Strength, Fitness Resistance Bar for Golfers Elbow & Tendinitis, Twist Bar for Physical Therapy

Customers find the hand exerciser effective for arm and wrist therapy, with a range of resistance levels and good durability. The product is easy to use and offers excellent value, though opinions on flexibility are mixed - while some find it very flexible, others note it doesn't retain its shape. The grip quality also receives mixed feedback, with some finding it easy to hold while others say it becomes too sticky to use comfortably.