New, Unused Kobesu Men's Underpants M Off-White Miracle Heat-Generating Cotton Purchase Price: 3060 yen Product Description (Quoted) ◎Miracle Hot Cotton◎ Absorbs moisture released from the body and generates heat. Warm even when thin, no need for layering. *The cotton itself absorbs moisture from the body and generates heat. Underwear (Cold Protection Heat-Generating Underwear) Absorbs moisture released from the body and generates heat. Warm even when thin, no need for layering. Miracle Heat-Generating Cotton: Thin, so it doesn't make you look bulky. Even when worn under a slim-fitting outer layer, it won't be noticeable that you're layering. How it generates heat: Reacts with absorbed moisture to generate heat. Achieved heat-generating function by binding heat-generating substances found in wool and silk to cotton. The cotton itself absorbs moisture from the body and generates heat. The fabric is thin but provides excellent warmth. Although new and unused, it has been stored at home. Please understand this before purchasing.