I am not sure why it is that more rucksacks are not fully waterproof, writes Mike Gormley, but here is one from VAUDE that definitely is.
Quite small in capacity, at 28 litres, the VAUDE Proof 28 works well as a daysack and is clearly aimed at those who have to commute in dodgy weather as it has an internal slot for a laptop and pockets for a few other items of gear. Perfect for those many commuters who these days go work by bike and need to keep dry valued items and perhaps a change of clothes.