Hand grip putty is a type of malleable material that can be squeezed and manipulated by hand to improve grip strength. It is often used in rehabilitation and physical therapy to help people recover from injuries and conditions that affect their hand strength. Hand grip putty comes in a variety of resistance levels, from soft to firm, to accommodate different needs and skill levels. It is a portable and convenient tool for people who want to improve their hand strength and dexterity, and can be used at home, in the office, or on the go.