Gymstick 

Gymstick is a revolutionary total body fitness tool that strengthens and tones almost every major muscle group in the body.  You can replicate any free weights exercise including squats, presses, lunges and curls.  Not only is it a full range resistance tool, but it acts as a walking stick for improving cardiovascular fitness.  It can be used by people from all walks of life from professional athletes to senior citizens, from patients recovering from injury or surgery to young athletes wanting to build up their strength, power and flexibility.

$135  there is an instruction booklet/video that is included