Bought these for the Goodwood Revival where we needed to dress up in 1950's style. The tights were perfect, excellent quality, revolting tea-bag colour, but absolutely right for the period! The size C weren't stretched at all on my legs (5'7", size 12-14), but 'medium' can often hang at half mast after a few hours, so wanted to be sure this wouldn't happen. Could have probably got away with the size B, but they stayed up really well and lasted the day outside without any problems. I had expected to be throwing them away afterwards, but will keep them for another such occasion - plenty of wear left. Would recommend; will buy from this company again next time I need something similar.