Daiwa Danrotech Crew Neck Undershirt, Extra Thick, DU-3122S, Black, Size M

This underwear utilizes far-infrared technology to adapt to temperature changes during the day and in the morning and evening. The soft, fluffy, and warm fabric envelops the entire body, ensuring a comfortable, always-on environment inside. The hydrophobic (water-absorbent) polypropylene lining prevents sweat from cooling the body, reducing the drop in body temperature caused by sweat in winter. This time, we've developed extra-thick underwear ideal for less active fishing.

The new extra-thick version of DANROTECH, the wearable fireplace, is here.

STRETCH: Made with superior stretch material that adapts to intense movement, 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 isn't transmitted through direct skin contact; it's felt even without contact, creating a warmth similar to that of a fireplace. The fabric absorbs and reflects the far-infrared rays emitted by your body. This helps you stay comfortable without overheating. Anti-static (ANTIELECTRICITY) We use sewing thread that suppresses static electricity. This reduces the unpleasant static electricity that can cause when putting on or taking off clothes.