dumkastriker

you should consult with your manufacturer I bought my custom gaming extended mousepad on https://printyourpad.com/ and they said it is machine washable in cold water with soap and detergent. Also they said it is good to presoak it in cold water with some soap, and to never scrub it with a brush.

https://printyourpad.com/ they do all kinds of extended mousepads, I ordered one for me and one for my younger brother as a birthday gift.