Its essentially an infrared sauna which uses infrared rays to heat the body directly but in blanket form. So instead of having four walls and a bench for sitting, an infrared sauna blanket wraps around your body as if its a sleeping bag that plugs into a wall and heats up.
Other than those differences, the two blanket and physical sauna are pretty similar. As their names imply, both products use infrared light to heat the body directly, thereby warming you up but not the area around you. You can buy a far infrared sauna blanket in the UK online.
If youre not a fan of heat and find it hard to breathe in rising temps, an infrared sauna blanket might not be worth trying. As for everyone else? If youre okay with giving a new gadget backed by minimal research a try, then just proceed with caution, and be sure to follow the instructions.
Most blankets cost well over $100 and many are even closer to $500, so it is somewhat of an investment. And while again, it may help improve your health, science doesnt say its a definite do-gooder. So, weigh the cost with what youre looking to improve.