.E-M-F Skull Cap Hat, Using a Thin Bamboo Lyocell Fabric - EcoShield™ Fara-Day Fabric - Wear Under a hat or on its own - Ideal for Everyday 5 G, B T, Smart Meter & Wi Fi environments Grey

Fits just fine, my hat size is 7 1/4, with crew cut. Many people with "big hair" say its too small, I can't say anything about that. It does block EMF very well. I got this one because it is thin and light weight to block EMF, not cold weather.

Very pleased! The hat is thin which is great for wearing under a hoodie or even for sleeping. Bought it for my partner who has sleep and anxiety issues, definitely helpful and we measured it with an emf meter. Definitely blocks emf significantly!

Much thinner than what I expected. Otherwise seems to be an awesome product. I wear it a lot, just wish it wasn’t so thin. It’s almost more like a wave cap or bandanna or something in its thickness compared to all the other beanies I have owned over the years.

Keep your brain protected! It has a protective element. It is one step to EMF protection. It works. How so, is up to personal experience and assessment. I'm being vague. I know. Full body protection seems to be more appropriate for me now, but that involves extended bodily appropriation. How far do you want to go and what does that take? This is a worthy but still meager investment. Do your research. Take an active response to EMF's in your environment. I know this product works.

Soft and nice to the touch but it’s tailored for people with small head. Like children or small women. It is not warm.

Tried testing it. Didn’t block anything.

I bought this to wear at night as I sleep and stop EM from interfering with my sleep. (thought I'd test the theory at least). I loved it when it came, but was disappointed that it1. doesnt have a tight enough band to keep it from coming off your head, especially while sleeping.2. the seams became unstitched after about 3 days and to try and sew such thin material again is something I dont even want to try.I would have expected for such a high price, the quality to be equal to that much money. Sadly, amazon's return window has passed and I have no recourse but to deal with it.UPDATED:::: I have to write an update on this simply to share how fantastic the customer support was on solving this issue for me. After seeing my review, I was emailed by the company and was helped completely to solve the issue. They are friendly and wonderful to work with. I'm very happy with my purchase and thought it would be fair to point out how quickly and kindly they worked to solve my problem. I would highly recommend this company!

Always slides up on my head. Will on stay on properly. Not to sure if it's because I have thick hair. I never have issues with any other beanies.Quality of the material is wonderful.