Are the fabric bags waterproof? How can they be cleaned if they get dirty?

Waterproof performance is provided by conventional fabrics such as Oxford cloth, nylon, and polyester for luggage. These fabrics have basic water-repellent properties, which can withstand light rain, daily water stains, and dust splashes. They do not support prolonged exposure to rain, soaking, or heavy rain conditions. There may still be water seepage at seams and zippers, and they are not fully waterproof materials.
Daily cleaning (minor stains) can be done using a clean soft towel dipped in water or neutral laundry detergent. Simply wipe the stained area with a soft cloth and let it air dry naturally. This is simple and convenient without damaging the fabric.
Deep cleaning (large stains) is recommended for local hand washing and gentle scrubbing, using a neutral cleaning agent. Do not machine wash, vigorously rub, soak in hot water, or dry in direct sunlight. This prevents fabric fading, hardening, deformation, or fraying.
After cleaning, place the luggage in a well-ventilated area to air dry. Store it dry for long periods to avoid dampness and mold. To enhance waterproofing, you can apply fabric waterproof spray regularly.