What would an extravert's gym gear guide be without the perfect bag to put it all in? Our eyes got just a wee bit wider when we spotted this whimsical Marc Jacobs backpack on the shelves. Yes, it might have storage space to boot and comfort to spare, but we'd be lying if we didn't admit the intricate floral designs didn't take us right back to our Saturday morning cartoon-watching days. Strap this on to make a statement on your way in - and out - of the gym.