Squeeze balls are a fantastic tool for strengthening your grip, improving wrist extension, relieving stress and hand pain, as well as improving your finger dexterity and strength. Made of thermoplastic rubber (TPE) and featuring a soft, textured surface these squeeze balls are designed to easily fit in your hand. These squeeze balls are designed to withstand repeated compressions without losing their shape. Please take note of the five color coded levels of resistance when choosing the squeeze balls that are appropriate for you.