The most annoying part about working out while traveling is lugging around all my workout gear. My running sneakers in particular take up a good bit of valuable real estate in my suitcase.
The Travel Trainer 5 Fitness Shoe ($79.99) by Reebok is a packable sneaker that allows you to take a sneaker along, while leaving the bulk behind. The shoe is made from breathable mesh and flexible synthetic upper in a technical athletic shoe style, with toe wrap over detail. There is a full lace up front, with quick pull lace loops. The best part? Tongue and heel snaps join to flatten shoe for packing. (Packing strap included.) While the Travel Trainer is not a shoe I would workout in daily, it's definitely a great option when traveling.
Buy them here.