Mizuno Breath Thermo Heavyweight Crew Neck Long Sleeve Shirt A2JA5714 (Women's) Underwear (Thick Type) 5544 yen Although it's an inner layer, it's thick and warm enough to make you sweat except in mid-winter. There was a heat-applied logo mark on the back of the neck, but it peeled off after many years of washing. I bought it over 10 years ago, but it hasn't worn out at all. Used only in mid-winter. It's designed with a relatively roomy fit.