http://www.Girl-In-Motion.com Flo compares two styles of hydration belts and two handhelds for runners. She'll show you the pros and cons of running with different types of fuel belts and different sizes of handheld water bottles. Great for picking out your hydration system to carry water on the run. Models shown are the Full Tilt Velocity Belt, the Run Lite Hydration Belt and 2 styles of Amphipod Hydraform handhelds.