It looks like there is this secret society working hard on making people suffer in a hotel rooms after long trips. Blue TV indicators, white and blue air condition panels, impossible to cover LEDs that are attached to fire detectors.
All of that to make sure the room stays as bright as possible the whole night. I am always impressed with the efficiency of these little, bright, things. In terms of a brightness per cubic meter efficiency.
I would imagine because if they just said "eye mask", someone might imagine negative aspects that don't apply to a more luxurious/premium material like mulberry silk.
I personally find it easier to sleep when my pillow is cool. Silk feels cool to touch. I'd image that it would help. Not sure if it being mulberry makes any difference.
It seems like it should be a no-brainer that if the light can cast shadows, it's too bright to install in a bedroom. I've started traveling with a roll of electrical tape.
All of that to make sure the room stays as bright as possible the whole night. I am always impressed with the efficiency of these little, bright, things. In terms of a brightness per cubic meter efficiency.