Sheep leather is soft, stretchy, soft and smooth, with fine grain and clear skin. The pore of sheep leather is small and oblong, make a group by several pore, pore is clear, platoon growth column, distribution is even.
Avoid size selection. The down coat will increase the flow of air between the clothes and the human body, the body temperature will be lost quickly, and too thin will reduce the gap in the down jacket, which will contain less static air, thus reducing the warmth.
The manufacturer, usually formal, will indicate the packing material on the product. If the product is marked as "250g 600FP 90% white duck down", it refers to the white duck down with the down jacket of 250 grams, which is about 90% of the size.