... , sports shoes, casual shoes, running shoes, warm shoes, such as the application of a number of shoes4.Function: Wool insoles(1 ... (4) high-performance thermal insulation (5) closely.Warm wool insoles The first "warm air structure" will be a variety of functional ... , and is warm to achieve a "fast and strong," the perfect state. Multi-layer structure, 3-5 times more powerful Sweat-absorbent ...