The waistband should fit around you without being too tight, a nice flat-woven tape drawcord ensures a snug but not skintight fit, promoting breathability, while the thick fleece and heavyweight ribbing ensures it won't stretch out after a few years.
Philippe says: "Our waist feels a little thicker because it's a heavyweight rib. There's also cover stitching to reinforce the seams connecting it to the rest of the pants. We do self fabric on the pocket and put our label there. You can also actually fit a wallet in ours because it's a little wider."