The sizing matches that of OTP (for size S X-long, color Black); the leg circumference is the same as OTP (even though some people claim that the leg in this model is very narrow). The material is thin, lightweight, and stretchy—great for warmer days. Unfortunately, there was an issue with correct size labeling during production. In the photo, you can see that the same model in the same size but in a different color (Shadow grey) has a leg that is several centimeters shorter. So, if something is wrong with the size, the reason may not be a change in sizing by the manufacturer, but rather incorrect labeling of the product at the production stage.