This eye mask is great. I get puffy under eyes and always have dark circles. I love the cooling effect when it's put in the fridge. But also warming it up is just as enjoyable. The only thing I somewhat dislike is the band. It's kind of cheesy.
If I don't sleep well & that's usually every night I wake up with puffy eyes (every morning) I depending on the weather heat the mask o cool the mask & using it for 5-8 minutes helps a lot in reducing.
You have to have a small head
I have a giant melon on top of these broad shoulders. So, most eye masks are a little small...but this is VERY small. Barely covers my eyelids. Also, does not stay frozen as long as others. Not a great product but it will do the trick if you need 20 minutes of cold and have a small noggin.
could be bigger eye mask
plastic packaging is great but eye mask itself could be bigger. Havent tried to heat it up, but works well in the cucumber method.