Clogs are the ultimate slip-on shoe. Partially or entirely made of wood, clogs typically consist of a wooden sole and an upper that encloses the toe but leaves the heel free and open. Women's clogs may incorporate a chunky high heel or have ergonomic flat soles for days spent on the feet. Wooden clogs hail back to the shoe's European origins, and fashion clogs sometimes sport sparkly beaded embellishments or warm sheepskin lining. eBay sellers offer thousands of new and used clogs in trendy and vintage styles.