OVERBOARD messenger bag, £44.99, www.overboard.com


Made from internally padded PVC tarpaulin, this bag will keep your 17in laptop and papers dry in a storm. It has plenty of pockets and key loops, plus a wide strap and carrying handle. An unusual feature is a zip that secures all compartments, which can stop items falling out or frustrate thieves. On the bike, it balances well despite the lack of a waist-strap. TB

PROS waterproof, main zipper
CONS no waist-strap