Shop the Bayswater with Strap in Oxblood Natural Grain Leather at Mulberry.com. The Bayswater is Mulberry's most iconic leather bag. Its simple structure, timeless design and signature postman's lock made it instantly popular. Creative Director Johnny Coca has enhanced the beauty and practicality of the Bayswater bag, and added a detachable shoulder strap for even greater versatility. The new design is light to carry, streamlined in size, yet retains its elegant, recognisable structure.