MUSCLE SUIT GS-ARM Arm Lifting Work Assist Suit ML This product is priced around 150,000 yen. With the "Muscle Suit GS-ARM," you can concentrate fully on your work without feeling the weight or fatigue, thanks to the assistive force that supports your arms from below. ● It enables free movement with a wide range of motion and can be used with various work tools, and it works without electricity, indoors or outdoors. I received this used from an acquaintance, but the size didn't fit.