With a vest-like fit, the Duro 1.5 helps you keep your hydration levels high. This model focuses purely on hydration and bringing gels with you, instead of having a large cargo capacity. The main image displays the colour youre about to add to the shopping cart. Images with the model showing details, may display another colour. The Duro is the best fit for most men. For women, Osprey makes the Dyna. - Included: two bottles in the front pockets - Compatible with a separately available 1.5 liter Hydraulics LT bladder, hose and valve - Stow-on-the-go pole holders can be used on the fly, that is without a need for taking the pack off - Front stretch pocket - Stretch side pockets - Weights and measurements per size: - S: 380 g, dimensions 28 x 44 x 13 cm, for chest circumferences between 7590 cm - M: 400 g, dimensions 33 x 44 x 13 cm, for chest circumferences between 90105 cm - L: 420 g, dimensions 38 x 44 x 13 cm, for chest circumferences between 105120 cm