Nathan's best-selling TrailMix Plus 3.0 Belt is ready to deliver comfortable, bounce-free storage and hydration that is ideal for any running adventure. The belt's redesigned flasks, holster, and pockets make it even easier to access essentials on the fly, while an ergo-shaped soft belt with multi-directional stretch material adapts to the body for a truly personalized fit. Finally, reflective trim helps increase runner visibility to keep you safe in the morning, evening, or whenever the light is low.