Forget practical: backpacks are all grown up. Bright block colors and quilted leather are replacing tomboy style neutrals and nylon, perhaps inspired by the graffitied Chanel version that appeared on the Spring '14 catwalk. Also, you can thank Belgian fashion designer Raf Simons (he's also artistic director at Christian Dior, FYI) for leading the way with his slick collab with Eastpak: trust us, one look and you'll be a chic-backpack convert.