I could not find any specific information about a "Meinaili" backpack brand. However, I can provide you with general guidelines on how to wash a backpack, which should be applicable to most backpacks unless there are specific care instructions provided by the manufacturer.
Before attempting to wash your Meinaili backpack, please check for any care labels or instructions on the inside or bottom of the backpack. If there are specific guidelines from Meinaili, follow those instructions. If not, here's a general method to wash a backpack:
Empty the backpack: Remove all items and belongings from the backpack's compartments and pockets.
Pre-treatment: If there are any visible stains or spots, you can try spot cleaning with a soft cloth, mild soap, and water. Gently dab the stained areas and avoid scrubbing too vigorously, as this could damage the fabric.
Hand wash or machine wash (if applicable): If the care instructions or material allow for machine washing, place the backpack in a mesh laundry bag to protect it during the wash cycle. Use a gentle or delicate cycle with cold water and a mild detergent. If machine washing is not recommended, proceed to hand washing.
Hand washing: Fill a basin or sink with cold water and add a small amount of mild detergent. Submerge the backpack and gently agitate the water to clean it. Avoid scrubbing too vigorously, as it might damage the backpack's material.
Rinse thoroughly: Make sure to rinse the backpack thoroughly to remove all soap residues.
Drying: After washing, do not use a dryer, as heat can damage the backpack. Instead, hang the backpack upside down or lay it flat to air dry. Make sure it is thoroughly dry before storing or using it again.
Avoid harsh chemicals: Do not use bleach or strong chemicals on the backpack, as they can damage the fabric and colors.
Please remember that washing a backpack, especially in a washing machine, may cause wear and tear over time. If the backpack is particularly valuable or delicate, or if you're unsure about washing it yourself, consider taking it to a professional cleaner who has experience with cleaning backpacks and other delicate items.