Following on from our look at the R10, we are now going to look at its big brother: the R25 has all the same features as the R10, but on a larger scale. As the name suggests, it is a 25L bag. The only thing missing that the R10 has is the pen holders and little pockets down the inside of the main compartment - this has been replaced with two cool bottle holders on the outside, which are  the first water bottle pockets I have seen that sink into the bag rather than stick out.