Gently squeezing this soft and pliable hand exerciser strengthens hand muscles and stretches tendons to improve dexterity. Working with the exerciser after heating it in a microwave oven can help alleviate stiff muscles and joints. Working with a chilled exerciser may help to reduce hand swelling. The smaller version 1.5 x 4 x 2", is ideal for a smaller hand or possibly a child. Small Hand Exerciser C4U85$9.00 Hand ExerciserThis is a slightly larger version of the hand exerciser, 1.5 x 4.5 x 3" (pictured above). Like the smaller version, it can be used to strengthen hand muscles and stretch tendons to improve dexterity. Working with the exerciser after heating it in a microwave oven can help alleviate stiff muscles and joints. Working with a chilled exerciser may help to reduce finger and hand swelling. Large Hand Exerciser C4U86$13.00 If you have any questions or need help, just call us, 877.538.6568