Dr Martens Bonny Tech Utility Chukka Boots in Black. Forged from extra tough polyester fabric for enhanced durability combined with rubber panelling and elasticity for comfortable extended wear. Coming in a wider more generous fit, the signature Docs DNA is present and correct with grooved edges, visible contrast stitching and a scripted heel-loop. Large iconic AirWair™ air-cushioned chambers to soles, which are stitched and cemented to the base of the upper and to the insole.