I've had a few Cocoon down travel pillows, and I've lost a couple of them, leaving them behind in planes, hotels... The reason? The pillows are black, and just seem to vanish under airplane seats and other odd places.
This pillow case proved to be the solution. I couldn't care less about the color as long as it was bright, but another reviewer is correct: when buying it, there is no way to choose the color. But I got lucky, since I bought two, and one was orange, the other burgundy. Now my Cocoon pillow is home safe and sound after a big trip, with many flights, hotels, camps, etc. The covers prevented it from being left behind on more than one occasion, and I am very happy with that.
Besides color, these pillow covers are good in other aspects: they are cool, soft and comfortable. They are also practical, being easy to wash and dispensing with ironing. And the pillow packs into the cover.
From now on, everywhere my Cocoon pillow goes, the pillow cover goes, too.