I travel a lot and take red-eye flights, so I usually have my neck pillow with me. I clip it to my backpack so it just hangs, which is fine, but as I go through security or sit in the gate areas, it's bumping into stuff or resting on seats and it grosses me out that it's dangling in the right quarters of bathroom stalls with toilet mist probably getting on it just minutes before I get on the plane and lay my face on it. So I got these as a good cover to quickly slip over the neck pillow and provide a barrier from all the airport germs during my travels. It's perfect. Roomy enough for my bulkier neck pillow, easy to open and close, it looks nice, and even if the protection it provides is a placebo effect, I don't care, I am super happy.