This is Uniqlo's extra warm Heattech. Heattech Extra Warm Crew Neck T-shirt (Long Sleeves) Black MEN This is an old model. Please refrain from purchasing if you are sensitive to used items, as it has been stored at home. Shipping will be via Mercari delivery. Size...L Color...Black系 Series...Heattech Neckline...Crew Neck Heattech Material...Extra Warm