This is the JW-170 from Otafuku Glove, a classic choice for winter sports innerwear. It's highly regarded on Amazon and in sports columns as a top-value innerwear. We recommend it as a spare sports inner or as a first piece for those hesitant to buy from more serious brands. I'm selling it because I bought it but the size didn't fit. I only tried it on once, but it's in very good condition. I'd be happy if someone could use it. Product Description BT Power Stretch High Neck Shirt Product Code: JW-170 Material: 90% Polyester, 10% Polyurethane The compression function that fits the body enhances heat retention and mobility. Keeps you comfortable with sweat-wicking and quick-drying processing and raised fabric! Raised Fabric Uses a fine brushed lining (raised fabric) with sweat-wicking, quick-drying, and far-infrared processing to enhance heat retention and comfort. It feels good on the skin and supports you from the inside during the cold winter. BT Power Stretch The stretchable power stretch that adheres to the skin supports the body with appropriate pressure.