Flexible leg-loops stretch too much

In the aftermath of Mina Leslie-Wujastyk's accident we have tested several harnesses and last week we said that Hirundos and Sitta from Petzl have a very safe construction. However, and this is the case for all harnesses with flexible leg-loops we have tested, they stretch too much. Personally I just barely fit small for the two Petzl harnesses at the same time I also just barely fit Large. It says in the description that Small has 48-53 cm width and Large has 55 - 60 cm. It should be mentioned that I could stretch the Small at least one cm to get the maximum at the same time the Large does not stretch at all, but stays in place anyhow. It should be mentioned that in comparison to other harnesses on the market, Petzl stretches more or less the same as all other on the market. Lesson learn for the industry, on order to do safer harnesses, would be to let them stretch less and force me to use Medium as I should.