The Charcoal Arcadia on the 4-Eye Boot is a premium, updated color treatment of the classic silhouette, with the high shine and lustre adding a rich depth to the upper's detailed etched lines. The etched version is innovative and highly detailed. The intricate, linear detailing of this look is produced by very exacting laser etching process which is designed to mimic the cutting boards found in use in the original Dr Martens factory. Heel loop. Leather-welted, the upper and sole are sewn together. Dr Martens air-cushioned wedge sole.