Blackburn outpost frame bag mediumwhen you are going on a long cycling tour its vital to get every bit of storage you can out of your bike'. '.strtoupper('t')he outpost frame bag from bike storage experts blackburn enables you to carry a large volume of gear in several different positions across your bike.water resistantthe bag is capable of surviving all the elements with an extra level of water resistant protection'. '.strtoupper('t')his is built into the fabric composition of the bag and will protect your stuff from even the most torrential of rains.expandabledesigned to be fully expandable this bag is meant to give you a huge range of space to help you carry more on your journey'. '.strtoupper('m')eanwhile, the expandable nature of the bag means that when you arent using the bag it can be squashed down into a smaller size to allow for easy storage.strap mountingincluded with the blackburn outpost frame bag is a strap mounting system that doesnt require any additional tools'. '.strtoupper('t')he bag allows you to attach the bag in multiple locations across the bag and is built to fit in with a large variety of sized bike frames.features material coated ripstop nylon closure waterproof zips mount type hook and loop velcro straps capacity 4.3l 5.8l expanded dimensions 457.2 x 177.8mm 279.4mm expanded expands to fit a wide variety of frames and sizes simple to install and remove with adjustable straps and webbing highly water resistant interior expandable organisation and exterior slip pockets includes hydration tube port medium size fits a large hydration bladder warranty period lifetime warrantyweight 246gbuy blackburn accessories from chain reaction cycles, the world's largest online bike store.