Charm Make Body Upper Arm Shaper, Front Hook Closure, Tightening, Also for Slouching I bought this because it's a compression type for tightening and is also supposed to help with slouching, but I only wore it twice and didn't continue. I'll give it to someone who wants to try it. Size L, Underbust: 72-78cm, Arm Circumference: 25-29cm, Shoulder Width: 33-39cm [Material] Nylon, Elasticity