On the website it said to order one size bigger than you normally would because they run small. That's BS, order your normal size. Other than that screw up its a pretty awesome jacket and the bibs are good too. I run a transport tanker and spend 30 to 45 minutes outside in the weather, standing around, watching the hoses every trip. Wore the jacket for the first time yesterday because the forecast was low 30s with windgust to 35mph, windchill in the low 20s. Zero wind penetration, pretty toasty even being one size too big. Almost broke a sweat hooking up the loading heads, lol. I'm selling the large jacket and bibs to a buddy, cant wait for my mediums to show up.