Richa Tophelmet £59.99

This compact bag has the zip opening two-thirds of the way over the shaped main compartment, making it impossible to get our big laptop inside and generally limiting loading. It’s still pretty good to ride with as the shape minimises drag, but the load does move a little, even when fully packed. There are two small pockets on the waistband and a large helmet carrier, plus a rain cover that’s needed as the zips dampened up in the shower test.