I bought myself these tights at Christmas and have worn them about 10 times on an hour-long run since then. My thighs do rub together and these tights wore out in the thigh area after less than 6 weeks! If you want long-lasting tights then AVOID. I love the drawstring waist because it means they don't fall down while running and the little pocket on the side was ideal for my iPhone but I'm very disappointed they didn't last longer. Perhaps the manufacturers could re-enforce this area with thicker or double fabric. I cannot be the only person who's thighs rub together when they run!
I like these tights; they are really warm, fit well and the bonus is the side pocket big enough for my phone. Will probably buy another pair.
I bought these in a xxs (Uk8). I have other decathlon tights from the gym range in the same size, which have a 29'' leg and normal waist. These tights are 27'' and are way too short for use in the very cold weather which they are meant to be used for. The waist is really tight compared with other decathlon leggings. I am 5ft6.5 and a UK8-10. The description on the web site does not mention the leg length of these. Would say they are 7/8 for an average size lady. Go up 1-2 sizes. Well made and very nice material however.
Very comfy & keep you warm