It's always recommended to keep your personal items close when traveling. I'm sure you've seen the ones that go under your shirt and the fanny packs - both good items, no doubt. However, the fanny pack is a tad bit limited in it's capacity.
Those bags that go underneath your shirt aren't exactly the most convenient thing, either. You're not going to be inside of a patisserie in Paris trying to reach up or down your shirt as subtly (but not really) as possible to get your debit card out. They're great for traveling on a plane, or a bus. But when you're out and about on the streets of Florence, Paris or Guadalajara, it's good to have something you feel secure with, looks cute, and is the perfect size for important personal items you absolutely have to have at all times.
Our Eurosport long sling bag is made of breathable and easily washable canvas, comes in three sensible colors (rose, cerulean and olive) and is just the right size. Perfectly capable of taking the beating that comes with traveling.