Inspired by trail runners, the next-generation VaporAir delivers a secure, customizable fit with streamlined storage and rugged, quick-drying materials. A new internal wrap panel and front toggles make on-the-go size adjustment easy, ensuring all-day comfort on long runs. Adjustable Fit: Interior wrap-around panel with exposed front toggles allows fast, secure size adjustments for a dialed-in fit. Performance Materials: Durable ripstop fabric on the back dries quickly; 3D mesh on the shoulders and interior back maximizes airflow and breathability. Hydration & Storage: Includes a 2L Nathan x Hydrapak bladder with quick-release hose for easy cleaning. Four front expandable mesh pockets (top pockets with elastic cords to secure flasks), one interior zip pocket for valuables, 2 side mesh pockets with passthrough features, a rear main compartment with bladder sleeve, exterior bungee for extra gear, and pole keepers on the lower back.