Quiet fidget for the classroom and builds finger and hand strength at the same time. Designed so that stronger fingers cannot compensate for weaker ones. Progressive, color-coded resistance gives positive feedback. Use each button independently to exercise fingers, or compress the entire unit to complete hand and forearm strengthening.

Yellow: X-Light Strength (force to compress finger/hand: 1 ½" lbs./5 lbs.)

Red: Light Strength (force to compress finger/hand: 3 lbs./10 lbs.)

Green: Medium Strength (force to compress finger/hand: 5 lbs./16 lbs.)

Blue: Heavy Strength (force to compress finger/hand: 7 lbs./23 lbs.)

Black: X-Heavy Strength (force to compress finger/hands: 9 lbs./31 lbs.)

Compact design makes this finger/hand strengthener/fidget a great traveler. Comes with illustrated manual.