It is perfect. It is thick and just the right weight, not too heavy or too light. The exterior fabric does make some noise but I personally like that with duvets as they seem authentic to me.
I slept with this duvet in our summer kitchen the first night it came which has NO heat and it was only 3-4 degrees. I was perfectly warm and slept like a baby!! I woke up very refreshed and  would recommend this duvet to anyone looking for one that will keep you warm all year round!!