The Might TheraBox solves this problem. The Mighty TheraBox is a High Quality Heavy Duty Total Gym in a Box. It provides resistance exercise for the upper & lower body. Workout your neck, back, arms, shoulders, legs, ankle foot, plus provides three levels of stretching for the ankle/calf. This is the all in one gym for anyone who wants to workout at home in the office, hotel room or anywhere you else you like. The TheraBox comes with color coded resistance bands, Its size makes it easy to transport and it's rugged enough to last a life time.
As you can see the Therabox is rugged and strong, Therabox.org