There's a pretty good chance that one of your New Year's resolutions is to hit the gym more often. We know it topped our list, so we went looking for a classic-style gym bag. The Warren St. Nylon Locker Bag from Jack Spade ($290) offers great looks, durable three-layer construction, water-resistant coating, exterior cell phone pocket, and comes with a dirty-laundry bag for those sweaty post-workout tees.