I've ridden an excellent courier bag for years (a Scott one) and I love it. feels great when riding and swallows everything I throw at it. But they are worse for your back. It doesn't matter if you ride 5 or 50 minutes. They will create an imbalance in your body. They are also rubbish when walking about.
Unless you're a courier, grab an Ortlieb Velocity or Messenger and avoid costly osteopath bills. They are more like a courier bag than a rucksack and work just as well when being a walkenger.
Another +1 for Ortliebs.
I've ridden an excellent courier bag for years (a Scott one) and I love it. feels great when riding and swallows everything I throw at it. But they are worse for your back. It doesn't matter if you ride 5 or 50 minutes. They will create an imbalance in your body. They are also rubbish when walking about.
Unless you're a courier, grab an Ortlieb Velocity or Messenger and avoid costly osteopath bills. They are more like a courier bag than a rucksack and work just as well when being a walkenger.