I am also selling this on other sites, so I may cancel the listing. m(._.)m A friend recommended this to me, saying it was very warm, so I bought a men's S size, but it was a little too big, so please consider it if you need it! I tried one on over an undershirt. m(._.)m The other one is unopened♪ It's a set of two♪ Heat retention, insulation, full deodorization + quick-drying Thermo Deo, the Thermo Evo series adds heat retention function. This is a step up in wear with enhanced insulation performance. [Manufacturer] OTAFUKU GLOVE [Model Number] JW-248 [Product Name] BT Power Stretch Thermo Evo Crew Neck Shirt [Color] Black [Quality] Body: 90% polyester, 10% polyurethane [Functions] ・ Heat retention insulation ・ Full deodorization ・ Fine micro-fleece lining ・ Compression ・ Power stretch ・ Quick-drying ・ UV reduction