Designed for compact-framed people, this durable hydration pack from CamelBak offers lightweight storage for all of your outdoor essentials. * Hydration capacity: 51 oz / 1.5 L * Pack weight: 15 oz / 390 g * Breathable air mesh back panel * Dimensions: 14.17 x 7.48 x 5.91 in / 36 x 19 x 15 cm * Safety whistle & reflectivity * Adjustable sternum strap