I am asleep nightmare... I sleep really hot at night, and always had a 4.5 tog duvet… but that never felt cosy or comfortable, couldn't explain why. I read the marketing spiel on panda’s website, where they talk about the duvet being able to regulate body temperature, being breathable, but without baking you alive....sounded like a distant dream. I have to say that every single word of it is true - the bamboo duvet I bought was a 10.5 tog, but it keeps you cool and regulate your temperature whilst maintaining a level of coziness. If I could give this product 11 out of 10 I would!