Hands that typed all day
Heat and a slow squeeze for fingers, palms, and wrists. Use it after a long stretch at the keyboard.
Left hand or right
It fits either hand. You do not buy a pair, and you do not switch attachments.
Charge it, then sit down
USB-C to charge. Heat and compression modes once it is on, so a tired palm and a stiff wrist do not have to feel the same.