Over the next few months we will be implementing a new standard for the measuring of the volume of our bags. This will allow you to compare, as it were, apples-to-apples when shopping for a new backpack, messenger bag or travel bag. You can feel confident that our quoted volume measures will reflect this industry standard — look for it when comparing our bags to the competitors.
(Tom’s quite certain that our current, in-house standard is very close to this industry standard: you’ll see very little change in the published numbers.)
The standard is called ASTM F2153-01 “Standard Test Method for Measurement of Backpack Capacity,” ASTM International, West Conshohocken, PA, www.astm.org.