If you are on a limited budget, you'll appreciate this Aldo Rucksack. It's a foolproof choice and a good investment. You might also be interested in this Rains Backpack. It's an item you'll love which also doesn't cost too much. You might also want to consider this Herschel Backpack. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you can afford to splurge, then what you're looking for is this Chloé Backpack. It's more expensive but worth your money. Why not take a look at this Fendi Backpack too? Expensive, but worth every penny. And one more item you might be interested in is this MCM Backpack. 'Cause you deserve nothing but all the finer things!