Turn heads on the slopes this winter in this eye-catching boot from the UGG Australia Cold Weather collection. Full-grain leather upper features a waterproof and windproof eVent membrane that vents moisture from inside the shoe for a durably waterproof boot. eVent Fabric: Through Direct Venting proprietary and patented technology, millions of tiny pores are able to breathe at their full potential, allowing sweat to vent directly to the outside of the fabric in one easy step. Functional lacing system offers a custom fit that is adjustable to your personal needs. Sheepskin sock liner and removable insole naturally wicks away moisture and helps keep feet dry. Exclusive Vibram outsole designed specifically for UGG Australia utilizing the TCI wet/snow compound. Repeating lug pattern maximizes surface contact and provides flexibility at the foot's natural flex points.