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).High quality leather upper follows the natural contours of the foot. Box leather is ideal for the workplace environments with wet, acidic or greasy conditions. It has a smooth, clean finish with the natural irregularities removed. It is the easiest leather to maintain, and can be wiped clean with soap and water.Roomy Thermoplastic toe box provides durable reinforcement and toe protection while allowing toes to move comfortably.Nonallergenic vegetable tanned leather sockliner wrapped around synthetic foam absorbs and evaporates perspiration.Protective Polyethylene heel counter allows the heel to move up and down when walking. Also provides lateral stability and acts as a natural shoe horn.PVC inner frame provides stability and reduces torque and pronation.Polyurethane outsole provides shock absorption and flexibility, withstands surfaces of extreme heat and cold, and protects feet, legs and back during long hours of standing or walking.Dansko's Stapled Clog Collection proudly carries the Seal of Acceptance from the American Podiatric Medical Association.Dansko Footwear Size ChartMeasurements: Heel Height: 1 3⁄4 in Weight: 1 lb Platform Height: 3⁄4 inProduct measurements were taken using size 41 (US Women's 10.5-11), width Regular. Please note that measurements may vary by size.