Bamboo Charcoal Deodorizing Shoe Insoles Scalable Unisex. A pair of Bamboo charcoal shoe inserts scalable unisex: among many benefits, breathable, antimicrobial, naturally fights odor, wicks moisture, and keeps your feet dry and comfortable, cool for summer and warm for winter. One area may be neglected to improve the quality of your life. May wash with water and sun dry. Material: Bamboo charcoal polymer+non-woven fabrics. Color: black. Size: scalable and to be trimmed to fit.