I wouldn't get a "surgical" mask, because they are disposable, you don't really need them, and they are still in short supply. Having said that, loads of people seem to be wearing them.
I have tried three different types from three different suppliers, all washable and re-usable. So, here is my take.
Moulded, pre-formed, three layer, bought from a tailor. Really well made and quite expensive. Lots of choice of material and size. Very comfortable. Very hot! They work really well, but wouldn't be able to wear them in really hot weather. Wore to a funeral yesterday, in the pouring rain, and still very heavy. But obviously do a good job.
Three different layers of cotton from a local lady. Much lighter. Cheaper. Fit not so good. Sizing more limited. Still well made and comfortable though. Three layer, so probably still pretty effective.
Two layer from another on-line supplier. Really light and easy to wear. Still really well made. Cheap. One size. Do like this one though, as prints really nice, and it is really light. Probably easiest to wear, but least protection.
All had adjustable elastics and metal nose pieces.