A lace-up silhouette with a rugged, outdoor sensibility is enhanced by classic UGG comfort - creating a men's everyday shoe that embodies the laid-back lifestyle of signature UGG . The lightweight flexibility of an EVA outsole and the breathability, moisture-wicking benefits, and temperature control of a Twinface sheepskin upper pair with premium craftsmanship and understated style. Treadlite by UGG Proprietary compound which increases cushioning and traction for a supremely lightweight, ultra-durable sole. SugarSole The sugarcane in our SugarSole foam allows us to reduce dependency on fossil fuels by replacing petroleum-based ethylene, absorbing 1.6 pounds of CO2 for every pound of ethylene replaced.