I love this duvet!!  It is not too thick or bulky, but it is incredibly warm.  I live in Canada and winters can be cold and typically we are using extra blankets on the bed.  Now that I have the duvet, it is all I need and honestly some nights I am a little too warm.  I also bought a duvet cover and the king duvet fit perfectly in the cover, so it is true to size!  Would highly recommend this!