XJH88 Hand Grip Strengthener Exerciser Gripper Adjustable Resistance 22 to 88 Lbs Hand and and grip exerciser -- Easy to adjust; the resistance is adjustable from 22 to 88 pounds; Small enough to put into a pocket, purse, backpack or gym bag Effective for both rehab and general strengthening; Great for new and advanced users thanks to the adjustable tension Hand grip with comfortable rubber grip; Non-slip handles covered with soft, comfortable and durable rubber for frequent and comfy usage. ERGONOMIC DESIGN Fit Large and Small Hands, Men and Women, Seniors Kids and Teens Help Musicians Including Drummers Guitar, Piano and Violin Players to Improve Dexterity and Performance Guarantee -- If you aren't absolutely satisfied, return it within 30 days for a refund, no questions asked.