Purchased for 1,978 yen each at Monotaro. This price is for a short time since it's just been listed. The surface uses "NIOI-CLEAR," a Japanese-made deodorizing yarn that thoroughly decomposes and deodorizes the four major causes of sweat odor and aging odor: "isovaleric acid," "acetic acid," "ammonia," and "nonenal." The entire yarn is modified, so the deodorizing effect lasts semi-permanently. The skin-facing side uses "MAXDRY WARM," which quickly wicks away sweat to prevent unpleasant stuffiness and chills, and also adds a warming effect through the brushed fabric. Stretch material 6 ways to wear it: [Full face], [Mouth opening], [Tasseled hat], [Beanie cap], [Face mask], [Neck gaiter] Uses: General field work, all sports, all outdoor activities, touring, skiing, snowboarding, fishing, motorcycling, cycling, running, mountain climbing, trekking, etc. How about it for cold weather protection? I didn't need it because I preferred one without the brushed lining. MAXDRYWARM NIOI-CLEAR Balaclava