First of all, there is no device that makes you have Lucid dreams. They don't exist. Though this device can help you become lucid.
The REM Dreamer is very comfortable, well made, and with practice, it can work! You just have to have patience and not give up after a week. It takes work to learn how to lucid dream. You just fine tune the settings and improve your dream recall and reality checks to train yourself to become aware you are dreaming when you see a flash.
The Mindfold Sleep and Relaxation Eye Mask is a unique sleep mask made to block light completely. The Mask comes with eye cavities so your eye lashes don't rub against the mask, and it does not smudge eye make-up!
It's capable of 100% light blockage, the foam is soft and the stretchable headband's velcro doesn't connect at the back.
There is a lot of eye room depth, so your eyelashes don't touch it.
The Velcro strap joins on the side, instead of the back, so you don't feel a lump at the back of your head. If you sleep with the back of your head on a pillow, it's very comfortable and you won't even notice the strap.
If you are looking for a mask that totally blocks out light, and lets you open your eyes without your lashes touching it, then this is the mask you want. The Tempur-Pedic Sleep Mask is another good solution, according to other sources, but it costs three times as much. If you're a side sleeper, get the Dream Essentials Escape Sleep Mask.
You wear the Remee Lucid Dreaming Mask just like a regular sleep mask, but it includes a built-in LEDs that flashes in patterns. Then in your sleep, you hopefully recognize the lights as something that normally doesn't occure, and then become aware that you are dreaming, and then have fun in the lucid dream.
It also comes with another little feature, Nap Mode where it will start to flash a short time after being activated. It makes it so you don't have to reprogram it from several hours of sleep to several minutes of sleep and back. This mode is also great for those “going back to sleep" moments on weekend mornings or days where there's no rush to get up.
It also has dimmer control so the lights don't wake you up by being so bright on your closed eyes.
You use a web site to change the settings.
This Mindfold Sleeping Mask was made to block out all light completely, great for getting back to sleep when it's light. It includes an adjustable velcro head strap so you can fit the mask to your face size. The Mindfold Relaxation Mask is not that great for side sleepers. If you sleep on your side, get the Dream Essentials Escape Sleep Mask. The foam padding includes cutouts that make a hollow space for your eyes.