Use one of the best running belts for all of your water and storage needs with the Nathan TrailMix Plus Insulated Hydration Belt 3.0. Nathan updated the holster design of the belt to provide easy, one-handed access to your hydration with less bounce. The belt contains two 10 oz insulated flasks with Push-Pull Blast Valve™ caps to give you plenty of hydration when running. There’s loads of storage in the Trail Mix Plus Belt—a large expandable front zippered pocket is designed to fit most large smartphones, while an exterior mesh pocket holds your empty nutrition wrappers or other items you need easy and fast access. Plus, there are printed reflective details on the logo and bottles to give 360 degrees of reflectivity. Stay hydrated with the Nathan TrailMix Plus Insulated Hydration Belt 3.0.