The ortlieb messenger bag xl is messenger bags cant be large enough at least according to professional bike couriers no problem for ortlieb in cooperation with bike messengers in nuremberg and berlin we created a 60 litre messenger bag xl the king size version of courier bags the spacious backpack easily takes an a2 folder plus two boxes of photocopier paper mailing tubes can be fixed with straps to the sides a zippered front pocket not waterproof offers room for mobile phone money