The Nathan VaporAiress has returned to provide women with a female-specific design thats derived from body-mapping. This is the first vest to feature Nathans new CinchFit Adjustable Sizing System that provides runners with a fit and feel that is truly customized with a comfortable, seamless fit. This race vest includes a 2L bladder with a quick release valve as well as two front pockets that can hold bottles and flasks of up to 22oz of hydration. A back kangaroo pocket is perfect for storing flasks, clothing, and other essentials. CinchFit features adjustable sizing for a tailored, body-mapped fit for all body types. Includes a 2L bladder with quick release valve. Features two easy-access front bottle pockets. Side stretch mesh pockets fit most smartphones. Soft-touch, no-chafe elastic perimeter binding. Reflectivity provides enhanced visibility. Features two adjustment points that allow you to alter waist and bust fit separately.