Technical specification: - 1 outside pocket with a zip fitted with a locking system so it does not flap. - Reflective printing for greater visibility. - Expandable from 20 to 30 litres. - A removable inner stiffener. - A yellow fluo waterproof inner bag to guarantee the load stays dry. - Load compression straps; it also lets the bag be steadied on the side frame-rack. - A ring with straps that go under the seat to allow the bags to be fitted through a double ring system. - Reflective inserts for high visibility at night - A multi-purpose elastic cord for extra load. Materials: - Polyester 600D / PU W / R - PU inserts - Fluo yellow reflectives - Matt black reflective material