dont want to sound all graham norton...but ive got a duvet that was described as "hotel quality" whatever that means. the outside of it is cotton and its incredibly soft and smooth. ive taken to not using a cover because its that good but not a great idea if a bit of wee comes out in the night. the thing is i cant find a duvet cover anywhere near as soft as the duvet, where do i get some and what terminology should i look for on the labelling??