Rab Vapour-rise trail pant sizing?

I have the Vapour Rise Smock and seeing as it is quite close fitting I just can't imagine the pants being baggy. The whole design works on the principle of the inner pile sitting snugly against the skin for evaporation so "baggy" just doesn't make sense. The reviewer might have meant that the pants are long and bunch up at the ankles. I don't have the pants, so I don't know, really. But I really love the smock for cooler weather, either directly against the skin, as intended, or with a thin merino layer underneath.

I don't have access to mine since I'm at work and haven't worn them in a couple of months but I'm pretty sure I have a medium and they fit like any other pant would. They don't fit like tights but I wouldn't call them baggy either.

great thanks. one other question – as far as I can tell they don't have a drawstring waist, how do they stay up??