This 1.5L. hydration bladder vest provides a low-profile, minimalist way to comfortably wear your water and bring along other essential items on your journey. Includes 1.5L. bladder. Front storage for nutrition and phone, which fits up to iPhone 7 Plus. Main back zippered pocket for extra layers and other running essentials. Adjustable front and side straps for dialing in a perfect fit. Soft perimeter binding prevents chafing. Weight: 5.5 oz./156 g. (without bladder). 9.5 oz./269 g. (with bladder).|Size: Chest at Sternum/OSFM 26" - 52" (66 cm. - 132 cm.).|Storage Capacity: 244 cu. in./4 Liters.