Kriega says:

The R16 gives a rider the confidence to carry keep-dry essentials on the daily commute, knowing on arrival the contents will be perfectly dry, whatever the weather. A super tough, waterproof roll-top daypack with a streamlined, uncluttered design the R16 has a slim profile yet has the capacity for a 15" laptop and a change of clothing. In addition, an internal zip pocket offers separate dry storage for smaller items.