Yes you can put your backpack in a washing machine provided the instructions on the care label say you can.
Can you wash your backpack in the washing machine. With laundry sack or pillowcase put the backpack in the washing machine. Basic school backpacks and bookbags made of nylon or canvas can usually be washed in a washing machine but be sure to check the care label first. However we profoundly recommend against it.
If your backpack has a metal frame remove this before washing. Check the pockets for any small items and check the corners for any dirt that may be lodged. A non-washable backpack into the washer will either damage the backpack or the machine itself.
Check your backpack can fit in the washing machine and has enough room to. Sponge or washcloth and soft-bristled cleaning brush like an old toothbrush Pillowcase or laundry bag. With some light cleaning products and a little bit of elbow grease you can keep your bag clean and hopefully extend its lifespan.
It depends on the material but most backpacks made of nylon or canvas and are safe to put in the washing machine. After finishing the cycle pull your backpack from pillowcaselaundry sack then wipe down the inner and outer parts of the backpack. Empty your backpack and leave all pockets unzipped.
Check the pockets for any small items and check the corners for any dirt that may be lodged. Take wet towel water only wipe down remaining. These instructions are only for bags without leather.
Mild fragrance- and additive-free detergent. However never use the washing machine if your backpack is made with leather or suede materials since the water is likely to discolor the bag. First you must prepare the pack to go inside the washing machine.