Begin by emptying the bag. Use a damp cloth with mild soap to gently clean the surfaces. Focus on soiled areas but avoid soaking. For the interior, wipe with a slightly damp cloth to remove dirt and let air dry. Avoid using bleach or harsh detergents. Do not machine wash, tumble dry, or iron, as high heat may damage the bag's thermal insulation and material integrity. After cleaning, ensure the bag is completely dry before use.