Daiwa Danrotech Extra WM Undertights, Thick, DU-3322P, Black,

Introducing the extra-thick version of the wearable fireplace [Danrotech] STRETCH Made with excellent stretch material that follows your intense movements, it provides a comfortable, stress-free fit without any tightness. DANROTECH DANROTECH uses your own body heat to keep you warm. Humans emit heat called "far infrared rays." This heat is not transmitted when your skin comes into direct contact with the body, but is felt even without direct contact, giving you warmth like a fireplace. The fabric absorbs and reflects the far infrared rays emitted by your body. This prevents you from getting too hot and helps you maintain a comfortable temperature. Anti-static: We use sewing thread that suppresses static electricity, which reduces the unpleasant static electricity that can occur when putting on or taking off clothes.