Nathan Trail Mix Plus Insulated 2 Hydration Running Belt Review

The Nathan Sports Insulated Trail Mix Plus belt is our top choice for a running belt with built-in water bottles. This belt has two 10-ounce insulated Fire and Ice flasks. They keep water cool on hot days and prevent it from freezing on cold days. Features include:

• Front zipper
• Soft, non-chafing fabric
• Two 10 ounce insulated flasks