Bamboo Shoe Inserts Unisex Men 8" Women 9 1/2". A pair of Bamboo charcoal shoe inserts 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. Size: US Men 8", US Women 9 1/2" (Euro/China: 41).