Review (4/5): works for dry/tired eyes, but must remain tethered to power
In terms of living up to its promise, this does work for dry and tired eyes. You spray the back of the mask with water (a spritzer is included) and warm it up. It creates a moist compress for your eyes which is very soothing. There are also fragrance-infused inserts that you can use (or not) to create an aromatherapy experience. I think they can be refreshed with essential oils when they wear out in the future since they fit inside the mask and don't come into direct contact with your eyes, but I'd only use oils that are safe for direct contact with skin anyway.
This can get pretty warm, but it takes quite a bit of time to warm up so I'd suggest plugging it in and turning it to the highest setting about 10 minutes before using it. After it's warmed up, then I turn it to the desired temperature. The controls are easy to use and intuitive. The only negative point is that the mask has to be tethered to a USB power source while you're using it which makes it harder to lie down while using it unless you have a power supply near at hand. The wiring is also on the fragile-looking/feeling side, but, so far, mine is working fine.
The mask is soft and comfortable. The material is satin-like and rests directly on your eyes. The pressure can be adjusted using the strap, but depending on the shape of your face, it'll rest more or less directly. Until I got used to it, the pressure on my eyelids felt a little strange, but I adjusted and now it is fine. I also think this helped a bit with sinus pain by applying warmth to certain parts of my face.