UGG. 1016223 NSAD. CLASSIC SHORT II BOOT. NIGHTSHADE. Our Classic boot was originally worn by surfers to keep warm after early-morning sessions and has since become iconic for its soft sheepskin and enduring design. The Classic II features two new updates water resistance and a lightweight sole to increase cushioning durability and traction. These versatile boots pair well with practically anything -- try loose boyfriend jeans and a velvet top.