After wearing it for almost a month
I can tell you this mask is really comfortable to wear. It give me a good sleep for the whole night. In fact, I don’t feel like I am actually wearing it while I go into sleep. It is not stuffy or warm like other eye masks which make the ErgoDream 3D mask stand out among the other masks. The thin and adjustable straps allow the mask to stay in place no matter how you toss around at night! It is completely opaque and well fitted on my face, which means it allows me to sleep in a complete darkness environment!