This Adjustable Thigh Master Kegel Master Trainer was easy to put together. You turn the red knob to adjust the resistance. It’s pretty easy to use. The straps help to keep it in place as you use it to exercise; the straps are long enough that you don’t have to worry about it not going all the way around your legs and they are Velcro ends. At the same time, it is one extra part that you have to deal with and store when not using. It comes with an instruction booklet.