Waterproof rucksack with removable inner compartment and practical side pocket that can be accessed without taking off the rucksack. The straps and back padding are breathable. Can also be attached to the i:SY front carrier KLICKfix® and i:SY front carrier 2.0 thanks to the integrated adapter. The i:SY logo and the side stripes are elegantly inconspicuous during the day but highly reflective in the dark.