Review title is Nice but no cover to keep it clean. [SEP] As far as comfort and fit, I give it a 5. The reason for 4 stars is two-fold. First, there is no cover to prevent it from soiling from face oils or makeup and this makes it inconvenient to use except at bedtime or first thing in the morning when all makeup is off. Over time, I'm sure it will get dirty. A removable cover would have been great. I will probably cut off an old sock and place it over it to keep it clean as I do not want a soiled cover on my eyes. Second, when heated the recommended 20 seconds, the heat only lasts about 10 minutes before it's no longer warm enough. To heat any longer than 19-20 seconds would be too long. It's nice that they donate a portion of the proceeds to charity so on the note, I would recommend it.