That's certainly the case with the magnificent Brooks Scape Saddle Pocket Bag - a small, practical 100% waterproof bag for bikepacking or gravel cycling that attaches in multiple ways.
Made from welded construction and waterproof materials and details to protect the bag from tears and abrasions, it uses internal padded foam on both sides to protect your belongings. A coated zipper with auto lock puller runs around the perimeter of the bag for maximum opening and hypalon patches on both sides guarantee protection. Used as a classic saddle bag or as a versatile pocket bag that attaches in multiple ways to the other Scape bags for convenient additional storage space.