This killer Tumi sling is a must-have for the chic, mobile woman. Made of 100% waterproof nylon and complete with plenty of pockets (and a key ring!), this mini backpack is just as functional as it is sexy. No longer will you have to rummage through your bottomless purse to grab your subway pass when you’re in a rush—just swing this baby around your side to access the front pocket, where you can stash all of your urgent items. Add to that the low-key yet lavish gold hardware, and this just might be the sleekest travel-friendly backpack around.