Simply the best pant i have ever owned. I'm 6'3" 200lbs, and the 34x34 is perfect fit. I think a lot of the sizing concerns are due to the outrageous sizing many manufactureres use today...there is no standard anymore, however, these pants are TRUE to size. If your worried, go one size larger...As far as comfort and durablily, i am a pole climber for the area Electric Co. for 17yrs, i'm in every kind of weather and terrain you can think of, and gone through countless Carhartts and Riggs. MK's are in a league of their own.