From the UGG® Classic Slim™ collection, the Bethany chukka boots feature: soft suede upper 10mm Twinface quarters functional cotton laces microfiber binding 10mm sheepskin lining added arch support fully-lined with 10mm curly UGGpure™ that naturally wicks away moisture lightweight non-marking Treadlite by UGG™ outsole with proprietary RMAT® technology for increased cushioning, traction, flexibility and durability patent-protected tread design approx. 3.75" shaft height this product contains bleached and dyed real lamb fur from Australia, UK, US or Ireland Imported. This boot has a more traditional and true to size fit than the Classic Boot. It is designed to be worn with bare feet, but if you prefer to wear yours with socks, consider ordering a half size up.