The Camelbak Mini MULE Hydration Pack offers all the tech as its bigger counterparts but aimed for smaller adventurers. This mini MULE holds 1.5L/500oz water with another 1.5L gear capacity, a bike tool organizer pocket and zippered compartments for layers and essentials. Added reflective strips and a safety whistle to make kids easy to spot on the trail. The brand new CRUX reservioir delivers 20% more water per sip, with an ergonomic handle for easier refilling, and an on/off lever that makes it easy to prevent leaks. Breathable air mesh back panel for a lightweight, comfortable fit. Reflective accents for visibility in low-light environments. Stretch overflow storage compartment lets you easily stash a rain shell or extra layer. Safety whistle built into sternum strap. Dimensions 35 x 19 x 16 (approx). 50oz. 1.5L Colour: Black Material: 100% Polyester Code: 155003000