The Flex-Grip® Hand Exerciser provides users with the ability to work dexterity and extension, while strengthening the hands, fingers and thumbs. Designed with finger and thumb holes, the Flex-Grip® has 2 distinct workable sides: One side features a ball that users can squeeze, and the other side has buttons on the thumb and finger pads allowing for separate exercises. This hand exerciser works muscles separately or in tandem, and is available in three resistance which are distinguished by color: Light resistance (yellow), medium resistance (red), and heavy resistance (green). The Flex-Grip® can be heated or cooled for hot/cold therapy applications without losing flexibility. Made of non-allergenic, latex-free polymer, the Flex-Grip® is washable and can be disinfected.