Washing instructions: We recommend hand washing in lukewarm water using a soap-based detergent. Do not use fabric softener. Loosen all straps, remove any detachable hip belts, and wash the backpack in a bathtub or large sink. Rub the backpack carefully with a soft sponge and then rinse thoroughly. Hang the backpack to dry in a well-ventilated space, or outdoors away from direct sunlight. Miscellaneous: We advise against using a washing machine and tumble dryer since parts of the backpack may come loose or catch and destroy both the appliance and the product. Most products can be re-waterproofed with spray-on waterproofing. Make sure that all of the metal parts of the product are thoroughly dry before storage to prevent corrosion. For long-term storage, keep the backpack in a cool, dry space.