Airinum’s Urban Air Mask is designed to filter out air pollution, smog, pollen, and dust. It’s also one of the most comfortable masks we’ve tried. It fits nicely over the nose—there’s a thick, cushiony nose piece—and sits comfortably under the chin. The ear loops are adjustable, but if you prefer a mask that wraps around the back of the head, you can easily convert it: It comes with an optional strap that connects the two loops. It has valves and optional valve stoppers to block them off; for an air mask without valve

• 55% polyester, 40% polypropylene, 5% active carbon