I bought several pieces of the Paladin armour set including these thigh guards

Two things to note; they do have a leather strap that isn't shown in the photos that you can attach and suspend onto a belt to keep them in place, this is super useful and I didn't realise they were there until I was putting them on.

The other thing to note is that they were larger than expected, I don't consider myself small, but I'd recommend buying a pair of padded trousers (I saw a good pair on Armour Arena you can get for not much more money).