Alpinestars Force 25 £139.99

Easily adjusted for a good fit, with easy-pull tabs on the straps — which manage not to flap. The only catch being how often the straps twist when putting it on. Once on, it’s superbly comfortable. The whole bag is really well detailed, with good pockets and internal divisions inside the bag and a rain cover that stays on at speed. It manages the load well when riding, concealing the weight and masking movement for excellent stability.