Chris -
It is a king size; however, if we were making another one for the bed we would use a 7 x 6 layout instead of the 6 x 5 that we used. It has enough drape to use, but we would prefer a little more to give room for movement and turning in bed. Also there is enough length to secure it under the mattress, but we would prefer some length to fold over at the top and pull up to the face while sleeping.
This is a great bed quilt because it goes together really fast and you can give it a great look by using more or fewer fabrics depending on your preference.
Darren