Sato-shiki Flexor Arm Worn a few times, less than 10 times, while driving. It's designed to tighten and stimulate, and I believe it offers health benefits, but I'm selling it because it feels too tight for me. You can definitely feel the lightness when raising your arms. I think I bought the ML size, but it fits so well that it feels like an S size, and it's quite constricting at first. Please check the photos and purchase if you understand. - Color: Black - Style: Arm cover - UV protection - Authentic product No stains, tears, or odors. Color: Black Gloves type: Fingerless