This summer, Louis Vuitton’s Speedy bag—an instant icon when it was launched in the 1930s—gets even speedier with the addition of an essential accoutrement for modern expediency: a shoulder strap. In the house’s classic Monogram canvas, the Speedy Bandoulière (literally, French for “shoulder strap”) is more fancy-and-functional than ever with the much-needed leather band. Better still, it’s not only adjustable, but detachable, for those of you who insist on toting your bag around in the crook of your elbow, palms up, like you’re a high-profile stylist or something. At Louis Vuitton boutiques.