Excellent Condition Flat Head RJB White Plain 38 Thank you for viewing this item. [The Flat Head / R.J.B / Thermal / Wht / Made in JAPAN] "Durable, comfortable, and warm!" The seams that can cause discomfort when in direct contact with the skin are flattened using a "flat seamer" machine. The ribbing and the main body are 100% cotton, so compared to heat-retaining innerwear like Uniqlo's Heattech, it's less likely to cause itching or static electricity, which is a plus for your skin. Also, the vertically knitted fabric is stretchy and fits the skin, preventing warm air from escaping, just like a down jacket or futon. I think it was around ¥12000. Real McCoy's JELADO Free Wheeler's Champion Hanes Healthknit Outdoor Products Indera Mills etc. Recommended for those who like these brands.