No bag can give you more storage, comfort or convenience than a good ol' backpack. But let's graduate from schoolboy and upgrade to designer bags that have topnotch craftsmenship without compromising functionality. To pair with T-shirt and jeans, nylon is a perfect pick. PRADA and BALENCIAGA have released many versions over the years, from simple logo on black to colorful patterns. Leather is also a classic option, giving a cool, urban look. Louis Vuitton's Monogram Macassar, FENDI's Bag Bugs and GUCCI's embossed monogram bags have all shot up in popularity for their unique designs. For a performance-based option that's travel-friendly, check out Supreme or MONCLER's heavy-duty backpacks.