The ortlieb backpacking handlebar pack is a great luggage option if you are trying to find that extra luggage option or whether you want to take the weight off of your back the pack ensures that an equal weight distribution is spread across your handle bars so that your steering isnt one sided the waterproof luggage roll fixed to the handlebar ensures eg a dry sleeping bag in all weather conditions the twin roll closures allow quick and easy access to your gear the pack with a volume of 1