Dr. Martens Women's Wincox Chelsea Buckle Black Polished Smooth US 7 EU 38 UK 5 US 8 EU 39 UK 6 US 9 EU 41 UK 7 Brand New In Original Box. The Wincox is a moto remix of the Chelsea, giving the classic pull-on boot an injection of vintage biker style — including a buckled harness and gunmetal hardware. Mid-height Chelsea boot Elasticized gussets for easy pull-on style Decorative buckled harness with gunmetal hardware Built on the iconic and comfortable Dr. Martens air-cushioned sole