Uniqlo Heattech. It's a dark gray turtleneck Heattech. The turtleneck keeps your neck warm. The light-colored spots have been there since purchase. □ Length: Approximately 59 cm □ Width: Approximately 39 cm ※ Although it's labeled as size L, it's likely a good fit for those who usually wear S to M sizes. ※ Worn once and stored after home cleaning. ※ Please understand that this is a used item and has been stored at home. ※ Returns are not accepted. ※ Please refrain from price negotiations.