HOW TO CARE FOR AND WASH A RUCKSACK?
We recommend hand-washing your rucksack. Use soapy, lukewarm water, possibly with a brush, focusing on the areas in contact with the body (shoulder straps, back, waist belt), where you have perspired.
This is the best way for the fabric properties to be maintained, in particular the waterproofness.
Then rinse well with lukewarm water, dry in a dry place away from direct sunlight (no radiator). Store in a dry place.