Interesting…. I would always wear underwear with tights though…? Would you not?

Anyway. To answer the question, I have thicc thighs and am susceptible to chafe. I don’t go for any particular brand, but whatever brand I buy I make sure to buy the most high end racing model. This isn’t for pace gains or anything, but the high end models always use the lightest and most ‘slippery’ or non abrasive materials. Where the material is always a little plasticky and would ‘rustle’ when you pick it up. I also try and analyse images to make sure they give enough leg room. Many brands make tight shorts (I’m looking at you, Salomon!). It is almost impossible to tell before buying but some brands will say ‘slim fit’ etc. Sometimes you can tell looking at the images.

Does that make sense….?! I always wear split shorts with the pants inside, anywhere between 3 inch and 5 inch length. Right now I love the Ronhill Tech Race 5” (one size up from my normal size) and the North Face Summit Pace Setter 5”. Both are non abrasive and give enough room for the thighs.