The classic Birkin bag has a very distinct design that has inspired thousands of handbags across the world. Birkin bags have two handles, a flap closure, two leather buckle straps and a turning knob with a loop for a padlock. The names of Birkin bags references the length of the base measured in centimeters.The Hermes Birkin 40cm Bag is popular as an evening bag.The Birkin 40cm is a versatile bag that can be carried for most occasions but is usually worn during the day or when traveling due to its larger size and capacity. Birkin bags are usually carried in hand or on the crook of the arm.Hermes Birkin 40cm Bag On Sale at hermes online shop.