The key to keeping out the cold when riding is to create dead air (entrapped air) by layering. In layering, windproof and waterproof outerwear is used to block cold air, and middlewear such as down or fleece is used to secure dead air. The underwear prevents sweat from getting wet. People feel stuffy when the humidity is high and feel cold when the temperature is low, so the role of underwear that comes in direct contact with the skin is very important. That is why I would like to recommend the "Photoelectron Super Heavy Weight High Neck".
The fabric material "photoelectron" has higher heat retention than natural materials.
Photoelectron", in which fine ceramic particles radiate body heat (far-infrared rays), directly "retains" the human body, preventing it from becoming too hot. Thermo Light", which retains heat better than natural materials, keeps you comfortable and warm. It's an undergarment that is smooth and comfortable to wear, yet retains heat comfortably. The Photoelectron Hybrid Undershirt has Zamza, a windproof, breathable material, on the front and upper arms, which are exposed to the wind, and on the back. The comfort of the photoelectron material is combined with the high wind resistance of Zamza. It is the best underwear for high-speed travel and touring in extremely cold weather, providing solid heat retention.
GSM24855 Photoelectron Hybrid Undershirt
The slightly shiny material on the upper arms, forearms, and back is Zamza. This material is characterized by its high moisture permeability and wind resistance. The material is a composite (hybrid), so it feels thick, but it is stretchy and comfortable to wear. You can feel the natural warmth of far-infrared rays.
Thinner material at the waist and rear hem makes it easier to tuck into the pants. Longer hem length at the back reduces cold air entry when leaning forward.
GSM24057 Photoelectron Super Heavyweight High Neck
Price including tax: 7920 yen
Size: M, L, XL, XXL, OL, BM, BL
Material: 97% polyester, 3% polyurethane
The fabric is made of Thermo Light and Photoelectron and has a thick finish. However, the fabric is not stiff and is soft and comfortable to wear.