Have found this to be a perfect summer duvet. It's light and thin, keeping you cool, yet you actually wake up in the morning feeling all snug and cozy. Our summer temperatures have been around 86/64F and the duvet has helped keep a pleasant temperature trough the night. Now that the nights are getting a bit cooler (55F), I've added a blanket on occasion, so will be switching to a warmer duvet soon. So for me personally this is a summer duvet only, and but is definitely worth its price.