You are now cruising at an altitude of 30,000 feet. Weather condition: clear. Local time: nap. To your right: majestic mountains in a swirl of cumulus. To your left: Mr. Sniffles, sweating and breathing heavily on your neck.

Now that’s just gross.

How to maintain personal space (and hygiene) on board? Pb’s travel pillowcases. Fresh, lightweight, clean, and made to fit standard-size airline pillows, the covers protect you from all unwanted airborne germs and bacteria. They come in convenient packages of two — for optimal round-trip ease. Best of all, they’re cheap and disposable, so you can leave them behind.

Which is exactly what you were planning to do with Mr. Sniffles.

Available online at pb-travel.com.