EQM 350, Single – EMF-Free Water Heated Mattress Pad – Temperature Control – Non-Electric Bed Warmer – Eco-Friendly – Helps Soothe & Relieve Stress, Muscle Soreness, & Tension

I had bought this for my elderly mom (since then, I bought two more, one for my father and myself). She was a frail, old lady and used it for more than 4 years throughout the year with no problem whatsoever. It's very warm, works great and safe with no EM to worry about. Its also great for bad backs. After she passed away, I drained the water and found residue coming out. I had used spring water all the time (instead of the distilled water per instruction) thinking it didn't matter, but it did. So if you want to use this machine optimally, you need to use distill water, regularly sanitize (using the sanitize button) and drain the water.

Navien is one of the most well known brand in Korea so I didn't have a doubt like other cheaply made electronic products. Since you are technically sleeping above "heated water" you are free from electromagnetic waves that can cause problems for some people.What makes it great is that I initially bought this so that I can get warmth when I sleep but when I found out that you can raise the heat to higher than what I consider a normal comfortable, I can kind of use it temporarily as a large heating pad for my back and legs. Just remember not to fall asleep with it that high because you will sweat like crazy.

It is a good photo, but some areas got moisturized after one year. The problem is I do not have anyway to get service. If the company notes it, it will be great in the future.

I have purchase this in Nov 2020 and used it sparingly since winter wasn't that cold that year. I stored it in my closet and took it out in Nov 2021. I noticed the water tank emptying faster than last year but kept pouring more water. I woke up in the middle of the night in soaked mattress... It took me a whole week to clean and dry the mattress. The water tank was fine but the mat was damaged... really don't know how... it was kept in my closet the whole time in a bag... I called the seller and asked if I can purchase a replacement mat since the tank was working fine but they said they only sell it as a set. So, there it is... wasted more than $300 to use less than 10 times for one single winter. I really liked it as long as it worked but it's just not durable and they should sell a replacement mat...

Navien mat is one of the greatest buys I had recently. Very well designed, sturdy but light weight, and yet very comfortable. A good addition to keep me warm throughout the year without concerns of EMF waves or fire that I had with electric mats

Very pleasant gentle warmth, high quality. Can't feel the tubes at all. Love the organic cotton covering that comes with it - you can always trust Korean companies to deal with nothing less than the best fabrics and fibers.That said, I kept waking up cold because the machine would be off by the time I woke up. Not sure how to fix that. It was also very lightweight so it kept bunching up underneath us through the night, and every night before bed we had to go through the ritual of readjusting it. Perhaps an upgrade where it's heavier and less prone to bunching up would be nice.

It heats the bed wonderfully however the pad bunches up creating lumps that restrict heat flow.

It's been about a month since I bought this product, which I loved when I was in Korea, and it's still working well. This gives me a comfortable sleep.