Built for hot-weather runners who want waist-belt hydration that stays cool, the TrailMix Plus 3.0 Insulated Hydration Belt features insulated flask sleeves that keep fluids colder longer, plus an updated holster design that secures flasks with one-handed access and no-bounce stability. Ideal for marathon training, summer road runs, and hot trail miles.

A large expandable front zippered pocket fits most large smartphones.