Shoulder Warming Supporter / Shoulder Warmer. I purchased this on Amazon the other day for ¥1860. I used it 2-3 times over an undershirt, but it doesn't fit, so I'm putting it up for sale. It's a knit material, light and warm. Supervised by a physical therapist. Since this is a used item, please refrain from purchasing if you are concerned. The price has gone up recently. Thank you.