Outdoor Research is a US-based outdoor gear maker with domestic manufacturing and fast shipping. It makes one of my favorite rain jackets, and now it also makes a relatively affordable mask kit. The fully adjustable mask comes with adjustable ear-bungees, a nose wire, and a three-pack of filters. It's also made from a durable polyester fabric that can dry quickly on the line and will resist trapping your hot, damp breath.
It's worth noting the fabric has also been treated with HeiQ NPJ03. This is a Swiss textile treatment that has been tested in the European Union for antiviral and antibacterial properties. However, these tests have not been replicated in the US as of publication. For our purposes, it's just a very washable, adjustable, and durable mask.