Your heel should lift up and down with every step, so if you are a half size, you may be more comfortable sizing up (for example, if you are a US 7.5, you may be more comfortable in an EU size 38). The Pro XP is part of the Dansko® XP Collection. The Pro XP clog from Dansko provides style and comfort to those in the nursing, hospitality and other occupational fields. This clog provides style and comfort to those in the nursing, hospitality and other occupational fields. Available in a variety of high quality leather uppers that follow the natural contours of the foot. For leather clogs, socklining is anti-microbial, leather. For non-leather clogs, lining is synthetic microfiber. Roomy toe box provides durable reinforcement and toe protection while allowing toes to move comfortably. Removable footbed may help accommodate a personal orthotic. Coring holes at the midsole reduce weight for a lighter feel with each step. Metal shank in the midsole provides reinforced construction for longer wear and lateral stability. Rocker bottom propels the foot forward when walking. Nitrile rubber outsole meets the highest standards of slip resistance and long-lasting durability.