Purchased in September 2025 for 1000 yen and worn about 3 times. Used a washing machine and dryer. Please purchase only if you understand that this is a used item. Will be compactly packaged and shipped via mail service. ■Product Details 【HOT-ON COTTON】 Uses heat-generating cotton "Hot-On Cotton" Through special technology, the moisture absorption of cotton has been enhanced. By blending this improved cotton, "Hot-On Cotton" is created, which has a higher heat generation effect and provides a natural and comfortable warmth compared to conventional cotton. 【Natural Heat Generation】 The heat-generating cotton gently warms naturally, so you can wear it with peace of mind. 【Excellent Absorbency】 It absorbs sweat well, is less prone to stuffiness, and reduces discomfort. 【Less Static Electricity】 Since it is 100% cotton, it has high moisture absorption and is less likely to generate static electricity compared to synthetic fibers. 【Gentle Comfort】 The comfort of natural fibers. There are no side seams, so it feels good against the skin and is gentle on the skin.