You could put clear tape over it, you could put a layer of glue, maybe, on it.
You wash the item with clean, hot soapy water then rinse or wipe clean afterwards.
You can get them from online sell.
Don't fold it or else you'll have to iron the folds out (I don't even know if the material safe to iron). I think you should lay it flat and keep it in a drawer or on a shelf that has enough room to...
Jospeh Talinbrant in 1923