If you sometimes have trouble deciding which extra t shirts to take along or whether you should take two pairs of shoes or three you may want to switch to ortlieb because the worlds largest waterproof bike bags have plenty of space for everything you need. The back roller pro plus is the xl version of the popular back roller plus touring bag. With a volume of 70 liters per pair it offers almost twice as much stowage space. Its also the first ortlieb back roller with an additional front pocket. Although not waterproof the pocket is unusually practical offering 4 liters of space for water bottles sunscreen wet things and other items. The durable codura fabric gives the bag a noble woven fabric look and is also completely pvcfree. The proven roll closure keep the contents of the inner compartment clean and dry at all times. Thanks to the ingenious ql2.1 system with its self closing hooks you can conveniently mount your bags on almost any bike rack. Further features integrated inside pocket shoulder strap high luminosity reflectors on both sides right and left side mounting tool free adjustable ql system ndash fits on all tubes with a diameter of up 16 mm material ps36c bag type pair adapter quick lock2.1 instructions download datasheet download 360deg view 360deg view weight 2x 1005 g 35.5 oz height 45 cm 17.7 inch upper width 36 cm 14.1 inch lower width 24 cm 9.4 inch depth 26 cm 10.2 inch volume 2x 35 l 2135.8 cu.inch load 2x 9 kg 19.8 lbs properties mig nopvc ip64 ql21 pair