At Podsacs we measure the volume of our packs using the American National Standard 'Standard Test Method for the Measurement of Backpack Capacity'. This uses non-compressible hard plastic spheres to fill and measure the extended and non-extended capacity of the pack and is the internationally recognised procedure for measuring pack capacity.
Our packs are weighed both fully specified and stripped on accurate and consistent scales so that we are confident that the stated weights are genuine. Competitors packs often use exaggerated volume claims which make their volume to pack weight ratios inaccurate. At Podsacs we pride ourselves on stating accurate volume to weight ratios and building durable packs that outlast the competition.