Exped Rucksack Rain Cover
It rains, things get wet, but not if you have one of these covering your rucksack. Keep all you dry things, well, dry. Protect your belongings from getting soggy with a lightweight rucksack rain cover.
Exped's rain covers feature a perimeter shock cord and stopper that allows a perfect flap-free fit. Comes with integrated stuffsack and size M features a bike light holder.
Also good theft protection in city use.
Size M fits to 40 litres and L up to 60 litres.