This is a set of four Uniqlo Heattech Extra Warm (Kiwami-Dank) T-shirts: V-neck and crew neck. **Product Features:** * Product Name: Heattech Extra Warm V-neck T-shirt (Long Sleeve) * Size: Men's M * Colors: White (2), Wine (1), Green (1) * Condition: New, Unopened * Retail Price: 1790 yen This is the "Kiwami-Dank" series, which is about 1.5 times warmer than regular Heattech. The V-neck design is easy to wear as an undershirt under suits and dress shirts. Only the green one is crew neck. I bought these as spares, but I haven't had a chance to wear them, so I'm selling them. They are new and unopened. This is a set sale.