I tested it it works it’s nice and big

This product came with a thorough brochure. That explains exactly how grounding works from a scientific perspective.
The directions were really easy to follow. I suggest that you read them for yourself and follow them to the t to ensure your safety.
I like how large this grounding mat is it’s the same size as any yoga mat. I’ve only been using it for an hour or so I can’t really tell if it is helping ground me. I imagine that it may take a little while for me to notice any differences, I plan on coming back and updating this review after I’ve been using it for a while.
I ordered this product because I live in Texas and it’s been in the hundreds and even though it’s already fall. It’s been way too hot to go outside anytime after 10 AM so I am looking forward to using this product to help ground me.

We are loving this mat and use it every day. It comes with a nice carrying back which is super lightweight, so thats a plus for carrying around. The included outlet ground tester is a nice touch, without it you could potentially have an ungrounded mat. It works just like an ESD mat. Plug the socket into the wall, connect the wire to the socket and then to the mat. Grounded mat instantly. We've left it out unrolled and it stays flat. The design on the mat is nice and better than just plain black.

I’m into mindfulness and grounding now and decided to try this grounding mat, and so far it is working out well.

This mat requires me to put another mat on top so I can get the appropriate traction needed during my yoga practice.

My wife is a yoga instructor and is very picky about her equipment. She tries any new equipment that comes her way and probably likes only a third of it. As far as adopting for regular use it's somewhere between 5% and 10%. She's really good at describing the qualities and/or issues *and* she's mindful that what might be good for a yoga instructor might not be the same for a recreational yogi or a novice.
First of all, she's not sold on the 'grounding' concept in general as well as the variety of benefits the product description suggests (eg: inflammation, anxiety, pain, etc.) She also said that she didn't become a yoga instructor to test outlets for grounding which is a valid point. This is just her opinion and 'your mileage may vary' as to the efficacy of grounding and the benefits derived therefrom.
The mat itself is a nice one. It's a good size though my wife said she prefers thicker mats. Again, that's a personal preference and she did qualify it to say that the best thickness depends on a number of factors such as personal preference, the characteristics of the surface you're using it on, the type of yoga you're practicing and so forth. The surface is only moderately 'grippy' but once again that's also a matter of taste and the type of yoga you're practicing. She really liked the markings on the mat which you're seeing more and more of recently. This helps you keep your bearings as to where you are on the mat which isn't always easy to determine.
Bottom line–the mat is a good one assuming that you like and/or need a relatively thin and moderately grippy mat. As for the grounding, I guess you might have a different experience than my wife did. Recommended.

I've heard a bit about grounding and its benefits and have been very curious to try it out. I have NOT, however, read the book "Earthing." I was very disappointed to find that this mat, practically speaking, does not come with any real information or instructions for use. There is a fairly thick booklet included with the mat, but the majority of the pages are blank for "notes" on how you feel. The rest is short descriptions of various products and anecdotes on how one person or another experienced one benefit or another. There's no actual information and no instructions. They just say basically to plug it in. But there's two things that it can be plugged into, it doesn't say which one. I guess it probably doesn't matter, but it would be nice to know. There's also no information on how long to use it, how to clean or maintain it, how it works or how to know it's working, etc. They basically expect you to have read the "Earthing" book and know how to use it already or something.
As far as the mat itself, as a yoga mat, it's quite thin and has no grip. It'll do, but I certainly wouldn't choose it as just a yoga mat, especially at this price!! I got it for the earthing aspect, but I guess I'm going to have to read a book and do a bunch of research since nothing was included.

I have been sleeping with this mat at the foot of my bed for several weeks, maybe over a month, and have yet to see any real changes in my health. As a yoga mat it is decent, but since it was advertised as a grounding mat, I'm going to call into question whether or not it functions as a grounding mat. I believe that real grounding is good for you, and try to put my bare feet on the earth as often as I can spare the time, but since that isn't very often, I thought that a grounding mat would help. This one hasn't.