Grip Exerciser

Desk-drawer forearm work between calls.

The GM2 is a spring-loaded grip exerciser that gives each finger its own piston, so you can train digits in isolation or squeeze the whole hand at once. It comes in three color-coded tensions, and at roughly 3.3 by 2.7 inches it fits in a jacket pocket. Climbers, musicians, and people in hand rehab use it to build finger and forearm strength anywhere.