The Sorel Whitney III Slip-On WP Boot is a slip-on winter boot with a waterproof nylon upper and a waterproof bootie construction, closed with a toggle lacing system and pulled on with a heel tab. What Our Gearhead(R) Experts Are Saying:"The heel tab gets my foot in without a fight, and I pull the toggle to snug the laces, so I'm out the door in seconds. The molded rubber tread keeps my footing steady on wet pavement and packed snow."