True story suggested a size L for me based on my actual height/weight (195cm/89kg). The pants are much more snug fit than some others, and originally I thought they would restrict movement in orienteering. However, having had them on 2 times it seems that flexible material in the back works very well and these became my top choice for orienteering competitions in most conditions.
Will use them today in province night orienteering championships too as weather is going to be warm (+12C to 15C expected).