7 liter backpack with 2 liter water bag, light medium/small size. External construction The innovative X closure system, with central quick release & 4 Velcro adjustments, cancels the oscillating effect & at the same time distributes the pressure of the shoulder straps evenly, on the chest & not on the shoulders, guaranteeing a free & unhindered driving Helmet carrying system on the backpack Outer fabric coated in rubber, to facilitate cleaning of the backpack using a wet sponge & which increases its water resistance Three-dimensional breathable mesh fabric in the area in contact with the back, with reflective shielding to keep the water bag cool Front & rear reflective inserts Customizable label for Biker identification 4 fixing points for the race number table Internal construction Pockets dedicated to the transport of tools, keys, multitool, air chamber, pump Power pockets designed to accommodate bars/gels Large 180 x 140 mm internal storage / smartphone pocket, positioned in the most protected part of the backpack Internal car keyholder hook Water bag 2.0 liter capacity: allows for an average autonomy of 4 hours 3.0 Easy to fill & clean thanks to the large sliding bar which hooks in order to guarantee watertight integrity Straw with On/ Off valve & removable tube with quick coupling for easy cleaning