Look what I found on Etsy.
Masks are reversible and made with a black cotton/polyester blend outer layer (with a white “priest collar square on the nose part) and a white cotton/polyester blend inner layer. There is an opening to insert a filter if you wish (dried cleaning wipe, vacuum bag piece cut to size, furnace filter cut to size, etc.). The nose piece has a small wire tie to form to the nose shape.
They description notes they are washable and reusable. Price: $12.99. You can order it here.
Want something a little more colorful? For $60, they’ve got you covered: