Waist Trimmer and Jump Rope The Waist Trimmer Disc can provide comfortable magnetic massage for your feet. It is portable and useful. The Waist Trimmer Disc is very easy to use, you just need to stand on it and twist. This exercise system has a low impact on joints, making it ideal for all ages High level waist twisting device. A smarter look is what we always need, to maintain what we have, we should keep up with some great fitness exercises. Jumping is an ideal and most effective indoor exercise all we need is a jump rope and start up.