Grip savers, or finger-strengthening devices, help prepare a climber for the strength and endurance challenges of climbing. There are a variety of devices and exercises that can strengthen a climbers hands. Learn how to use grip savers in this climbing video tutorial. Take action: squeeze a tennis ball, strengthen fingers to keep balance, and follow good diet and exercise. Josh, the instructor in this how-to video from Live Strong, is an avid climber that resides off the coast in central California. He has managed for a mountaineering sports company for several years and loves the sport.