I would not really call it a risk to go with the Manta Pro Sleep Mask. I also 've been using a Manta sleep mask myself for the past few months and it has worked really well for me.
The standout feature is the true 100% light blocking, thanks to the adjustable eye cups that create a proper seal without putting pressure on your eyes. As a side sleeper, I also found it very comfortable since it doesn’t feel tight or get pushed into your face like flatter masks often do. It’s breathable, lightweight, and the zero-pressure design is great especially if you have sensitive eyes or longer lashes.
In my experience, it is a reliable and comfortable option if your main goal is complete darkness and better sleep quality.