The Harkila Orton Gusset Wellington Boot is an insulated, thick rubber wellington boot with a side zip for easy entry and comfort, as well as ventilation when active. The Harkila Orton Gusset Wellington Boots are extremely light and flexible. These fantastic insulated wellingtons come with an Ortholite sole to support your feet. The sole of the wellington comes with Harkila gel cushioning and a warm 3mm fleece-lined Neoprene insulation.