I am a size 14-16 so I bought size 16-18 and they are too small. They don't reach my waist front or back and the coverage over my bottom is so low it's embarrassing. The leg length is lower calf and of course I have to pull them up as far as they go so they look silly. Probably shan't be wearing them in public! I certainly can't see a size 18 wearing them at all so if you want to buy them I'd go two sizes up.
Brilliant for DAB on the move. Uses the headphones as the aerial, and I have used this in the car with a line aux input into my car audio system which works well although reception can be dodgy in some areas. I have also used it to listen to cricket commentary at a match and the batteries lasted the day. Very good for the price.