Horween Gray Dublin? Yes, Gray Dublin - don’t let these leathers get away! Gray Dublin has a beautiful full grain that is enhanced by a wax finish. The wax finish creates a beautiful pull-up effect on the leather when bent or handled. Horween’s Essex, Dublin and Derby are tanned using Horween’s 100-year-old Cordovan veg tan liquor formula. Essex leather is infused with a wax blend and ironed under a hot roller to create Dublin – a full-bodied, full vegetable tanned leather with a rugged appeal.