Women's BZees, Keeper Boot. These boots are your no-nonsense hiking and trekking partner. You'll experience total comfort with the Dynamic Stretch Uppers that give your feet room to move, ComfortBoost foam in the footbed for cushioning, and a Cloud Technology outsole. Stretch microfiber or fabric upper with recycled fabric linings and cozy faux fur collar with DEFENDER Repellant for protection from water, oil & other stainsComfortBoost Foam insole with sustainable algae-based foam layerSoCush Memory Foam arch support and Comfort Cone Gel HeelAir-Infused OutsolesMachine washable