SPERRY TOPSIDER. STS99811. POWDER ICE CAP WINTER BOOT. WHITE.When the temperature drops keep your style quotient high with the Sperry Powder Ice Cap Winter Boot. This moon-boot-inspired boot has been lined with Thinsulate insulation and faux fur for warmth. The waterproof construction ensures that your foot stays dry during escapades in the cold and wet outdoors. Moreover the Vibram Arctic-Grip Wet Ice Technology outsole with Wave-Siping provides ultimate traction in cold-weather terrains be it a dry surface or a wet one.