JK London City Duchess Street are square shaped plastic acetate eye glasses which are lightweight and durable. They have a discrete brand logo on the sides. JK London City Duchess Street are available in size 51x19. designerglasses.co.uk offers this frame in various colours including: JK London City Duchess Street 5292 Dark Tortoiseshell, JK London City Duchess Street 5293 Blue Tortoiseshell and JK London City Duchess Street 5294 Purple Tortoiseshell. designerglasses.co.uk is one of the oldest optical sites on the internet.