K-3B Premium Line Double Tube JAPAN MADE Down Black 080_T K3-B Purchased from the official online store several years ago. Worn about 10 times a season for two years. Stored at home after that. Since it hasn't been worn much, it's in very clean condition with no stains or frays! It's incredibly light, and it's warm enough to wear with just a T-shirt underneath!! This item retails for ¥176,000. ■ "K3-B 'THE PROFESSIONAL SPEC' PREMIUM DOWN" The ultimate professional-spec premium down, only K3-B can create, is finally here! A unique construction with down tubes placed even behind the seams eliminates cold spots. High-density fabric provides windproof and waterproof breathability, offering a light and high-quality feel. Premium down for urban environments, tailored by a top-class domestic factory. ■ Item No. 080_T Material: Outer: 100% nylon (polyurethane laminate processing) Lining: 100% nylon Filling: 90% down / 10% feather Color: BLACK Made in Japan ■ Achieves ultimate cold protection and wind resistance. We have developed the ultimate down with no cold spots. A down's cold spot is a point where cold outside air enters through the seams (needle holes) of the stitching, allowing the warm air inside to escape. In regular down jackets, there is quilting between the down, and these needle holes in the seams become cold spots. However, K-3B's down has down tubes placed on the back of the seams as well, and the down on the back covers the needle holes, making it difficult for outside air to pass through and preventing the heat inside from escaping. Because these two layers of down tubes are placed throughout, it uses about twice the amount of down feathers as a regular down jacket. ■ Production Background Production is carried out at "ZANTER," considered the pinnacle of Japanese downwear factories. ZANTER is a specialized manufacturer that has been developing downwear for Antarctic and Arctic expeditions for over 50 years, and it has a reputation for technology and quality control that can withstand extreme environments. By tailoring at a top-class domestic factory, a JAPAN MADE premium down is completed, possessing high heat retention, functionality, and durability that cannot be obtained with ordinary down jackets.