The USWE MTB Hydro 3L is the hydration backpack designed for performance-oriented MTB or gravel riders, seeking a high-quality cycling backpack that stays securely on your back even in the most challenging terrains. This backpack is equipped with the No Dancing Monkey™ 1.2 harness system along with integrated elastic straps allowing full breathability and freedom of movement. The NDM™ functional buckle ensures secure closure and optimized fit. The Hydro 3L features a 2-liter Elite hydration bladder that comes with a slide lock for easy cleaning and drying, and you can add ice during hot temperatures. Additionally, the bladder has a smart Plug-n-Play adapter for secure and simple handling. The backpack includes two hose clips for secure hose attachment and quick access during rides. The Hydro 3L has ventilated and ergonomically shaped shoulder straps, distributing the load comfortably and evenly across your shoulders. It also boasts a ventilated back panel with wave-profile pads for optimal comfort and airflow. For improved nighttime visibility, the backpack has several reflective points, because we don't want you to get run over! The total volume of the backpack is 3 liters, but it can be reduced to 2 liters by removing the universal bag where you can store a spare tube, multi-tool, or your rain jacket. You can decide whether to travel light or ultra-light. You can even attach a full-face helmet to this pack! For enhanced visibility and safety, there's an additional reflector. Chest circumference: M to XL (84 to 110 cm) Total volume: 3 liters Bladder: 2 liters Dimensions: 31x16x8 cm