The reasons I like the TNF Proprius Pant are that the fabric seems to have the right level of air permeability for both cold wind and warm still air. There is a balance, and I think the Proprius has achieved it. The pants have a pocket on the right thigh for snacks, sunglasses, or glove liners or two of the afore-mentioned, but not more. It is too bad that they did not include another pocket on the left thigh. Other advantages not to be over-looked are the ski-boot-compatibility with the edge protection patches and the leg opening zipper that allows you to go over a boot cuff. The webbing belt has a generally secure attachement and is infinitely adjustable not matter how much weight you lose going uphill!