Ortlieb's bar bags have always been among our favourites. The latest incarnations tweak the design, with a more rounded, cable-friendly base. We tested the lighter, top end Ultimate 5 Plus.
Gone is the front pocket - things had a tendency to jump out anyway - replaced by two small mesh side zippered pouches, suited to knick-knacks like Chapstick or a multitool. Build quality is superb, as usual, while features include a front reflector and a removable shoulder strap.
The quick-release mounting system is Ortlieb's own and is compatible with normal and oversize handlebars, though the key-operated lock seems unnecessary, given that anyone could just as easily open the lid. Inside, there's a removable zippered purse. Two easy to reach snap buttons keep the lid in place with a snug fit, plenty of overlap to keep dust out and a plastic insert to keep its shape and stop water pooling.
Considering the price of the bag, it's a shame you need to fork out more cash to buy the waterproof map case too (£15.99), though it's a good one and fits an OS map. Two sizes are available (7L and 9L) along with a choice of colours and various accessories, including a padded camera insert.