The sizing matches that of OTP (for size S X-long, colour Black), and the leg circumference is the same as OTP (although some people claim that the leg is very narrow in this model). The material is thin, light, and stretchy—perfect for warmer days. Unfortunately, there was a problem with the correct size labelling during production. In the photo you can see that the same model in the same size, but in a different colour (Shadow grey), has a leg that is a few centimetres shorter. So if something does not match the size, the reason may not be that the manufacturer has changed the sizing, but that the product has been labelled incorrectly at the production stage.