Our Sauna Blanket is made from 7 different layers, which make the blanket waterproof, fireproof, and protect against any form of overheating. The inside and outside are made of high quality vegan leather. The exterior is designed with a nice finish with the Comforth logo embroidered in our classic golden colors. The materials are 100% hypoallergenic and free of toxins, and the product is thoroughly tested for safety as well as CE and ROHS certified. Some sauna blankets are very narrow, so it can feel tight to lie in them. Our Sauna blanket is spacious and made of material in which the skin can breathe. In our Sauna blanket, real carbon fibers are used to generate infrared radiation. Some cheaper versions use copper wires or steel wire, which are less secure and unable to emit long-wave infrared light. These sauna blankets are therefore not infrared, and you should stay away from them. Therefore, you must not confuse an infrared sauna blanket with a heating blanket - they are two completely different things. When you purchase from Comforth, you will receive a detailed English manual, and you can always contact our customer service if you have any questions at support@comforth.com. In addition, as always, we offer a 100-day 100% satisfaction guarantee.