Wash by hand using very gentle soap
After a season of sweaty hiking, your backpack deserves a really deep clean so it looks as good as new.
To ensure fabrics retain their properties (especially waterproofing, very important to protect bag contents when it unexpectedly rains), we recommend you do not machine wash, tumble dry, dry clean, iron or bleach your backpack. So the safest way to clean your backpack is to hand wash it. If cleaning your bag manually, we recommend you use warm, soapy water and, possibly, a brush. Remember to take more time cleaning the straps, back, waist belt and other parts which are in direct contact with the body. Rinse thoroughly using warm water.