Yeah I got one recently. I never bought one because I thought I wouldn't like it on my face, but it's very light. Bothers me less than having blankets on my face. Light from outside, even during the night really bothers me. The first day I used it I went to sleep quickly at a normal time, and woke up just after the sun rose. It felt like my body aligned itself perfectly with the daylight.
My eyes finally feel so rested, and the Nidra sleep mask that I have now has space in front of the eyes so I can look around when I wake up and stretch my eyes or chill out and meditate. They're great for resting my eyes wherever I want. Even if you don't need them for sleeping.
But I don't like the strap on the back. I have to use a pillow (I usually sleep flat on the ground) because the velcro strap is very uncomfortable on the back of my head. I read a review and they said it leaves a mark in your head. I put the strap higher up on my head and tighten it, which I find works better to secure it without letting light in.
So I also bought another mask from Etsy that has a double, thinner strap. It hasn't come yet, but I'm excited because it's hand made and uses real silk. That is, if you want. You can customize it endlessly with many different materials on the inside and outside, and a varying amount of materials depending on how thick you want it for softness versus airflow.
Different types of silk, cotton, and bamboo. I chose 3 layers of bamboo/cotton, with silk on my eyes, and a cotton print on the front. I figure the bamboo with only 3 layers will air out my airs more, and the silk is for comfort.https://www.etsy.com/shop/AllNaturalSleepShop