Everyone knows what happens to exercise equipment---it generally sits in a corner somewhere. SPRI equipment is easy to use and can be kept around a chair or pole. No storage problem like weights. One can just pick it up and use it. It also does its job quite well. The color system is good one, but there does seem to be a larger difference between red and blue than yellow and green to red. I would recommend it because of its effectiveness. The brochure is not that good, but one can find exercises from plenty of other sources. The brand is found in most gyms so you can "try before you buy". I am quite happy with the equipment. Recommended.