You can use medical disposable masks as replaceable filters.
YOU CAN PUT COLOURS IF YOU WANT, OR I WILL CHOOSE FOR YOU.
Filters are made of high quality 2-layer material to help with breathing problems, ideal for summer.
I have more designed fabric just ask in comments and I'll mail you back with options.
Cotton and elastane
Machine wash 40 ° C,
wash separately from other clothing and place in a wash bag or pillow case cover.
If you need to iron it, do it on a low setting, do not tumble dry.