I bought the 10.5 Superking in this make and found it to be the i have ever bought!  Soft and light, just folds around you  and yet is warm.  We live in Scotland and yet through the cold have found this fine without an additional cover. My hubby who is inclined to be cold has been very surprised,not only how warm he has been but also how light and soft and huggable it is.  Have gone back to get the 4.5 one for a Scottlish summer!.