From backpacks to gym bags, Sherpa bags have something to please everyone. My gym bag doubles as a carry-on, with enough room to easily accomodate my 15" MacBookPro, my bulky camera and a good book to read, with a lightweight sweater tucked in for layering in air conditioned places. The bags are washable and durable with just the right pockets where you need them. This bag, for example, has a "wet" pocket which makes it great for a swim suit at the gym or messy snacks on a plane. The straps on the bottom work for a yoga mat or a jacket, and the messenger style makes it a breeze to sling it around for long walks in Paris or wherever you find yourself roaming.