Happy Masks. Very light weight despite having 5 layers, water resistant inner and outer layer. Adjustable ear loops, small nose wire for fit. The website says they have been tested by independent third party labs for filtration rates. They are the parrot beak shape so they give you more room around your nose and mouth. Ordered some and my daughter now only wants to wear them to school, so ordering more. I find them very comfortable. Haven’t worn them in the heat of summer but we will see. They are a bit pricey though—I think around $20-25 each