Brush off loose dirt. Cleaning may be easier if you remove any loose straps, internal staves or accessories.
Using hand soap and a brush, wash by hand in cold water. DO NOT USE DETERGENT OR BLEACH.
If the pack has staves, replace them before drying to avoid shrinkage.
Hang to dry in the shade.
Store your pack in a cool dry place away from direct sunlight.
DO NOT DRY CLEAN. DO NOT USE ANY SOLVENTS.