NATHAN VAPOR AIR 3

MAXIMUM BREATHABILITY & FUNCTION New 2-layer moisture-wicking air mesh on shoulder straps & back interior to provide maximum breathability & comfort while on your run. MORE POCKETS, MORE STORAGE New back zipper pocket for easy access on your run. Features colorful bungee cords on the front shoulder + back panel for additional storage. Plus storage loops on the side for trekking poles. COMFORT FIT FOR ALL BODY TYPES Our Adaptive-Fit Adjustable Sizing System provides a tailored, body-mapped fit ideal for most body types with newly added expanded size of 1XL - 3XL.