The Carhartt Firm Duck Double-Front Logger Pant is constructed from 12oz/407g firm hand 100% cotton ring spun duck and sits at the waist. It has a full seat and thigh and has a double front with cleanout openings that accommodate knee pads. It has multiple tool and utility pockets and a left-leg hammer loop. It has stronger sewn-on-seam belt loops and heavy hauling reinforced back pockets. Carhartt garments are generously sized so you may wish to drop down from your regular size when ordering.
I recommend any Carharrt product to anyone who wants an item of work clothing to last and last.
I have yet to find any other workwear that will outlast Carharrt.