We perform lab tests to validate all elements:fabric, buckles, straps, foam and zippers. For example, for fabric: resistance to abrasion and tearing, colour-fastness in UV light, resistance to washing, waterproofing, etc. Then, the finished product is tested replicating the accelerated demands on the backpack over several years to check the strength of the assemblies. The backpack is weighted, then placed on a dummy which reproduces the movement of fast walking over thousands of cycles
How is backpack volume measured?
We use a standardized method to measure the volume of each backpack: the main compartment and each pocket are filled with little balls. We then empty the balls into a graduated container which gives us the equivalent number of litres.