TRAIN & PERFORM: Train light with the women's Dyna 1.5 vest. Includes two 500 mL soft flasks with removable stabilizer, breathable mesh and bounce-free fit for fast-paced runs HYDRATION INCLUDED: Two Hydraulics 500 mL Soft Flasks with removable WingStay stabilizers keep fluids at your fingertips. Wt: 1.4 oz / 40 grams each BOUNCE-FREE STABILITY: A stable 360-degree stretch backpanel, dual sternum straps and refined flask pocket patterning with dual anchors eliminate bounce EASY ESSENTIALS ACCESS: Front trekking pole carry, five stretch food/supplement pockets, a vertical-zip front pocket and a reservoir-compatible, zippered rear compartment provide organized storage WOMEN'S FIT, THREE SIZES: This vestpack features a tailored women's fit and comes in three sizes based on chest circumference. Refer to the size chart for measuring instructions, then choose the best size for your body bluesign PRODUCT: This product meets bluesign PRODUCT requirements, which means materials and components have been selected that adhere to rigorous third-party environmental and social criteria during production VEST WEIGHT - SMALL (WITHOUT FLASKS): 0.39 lb / 179 g TWO FLASKS WEIGHT: 0.19 lb / 85 g