Carhartt Men's Rugged Flex Rigby Work Bib - No break-in time necessary. These lightweight bibs are ready for the toughest jobs, with stretch canvas that feels comfortable from the start. Built to last. The extra bit of stretch gives you enough flex to bend and squat without a problem. 8-ounce, 98% cotton / 2% spandex canvas Built to move with Rugged Flex stretch technology Carhartt-strong, triple-stitched main seams; Metal rivets at vital stress points Adjustable elastic suspenders for a personalized fit; Zip fly Multi-compartment bib pocket with zip closure; Pen stall Double-layer knees with openings for adding knee pads and cleaning out debris Two large lower-front ledge pockets Right-leg cell phone pocket Right-leg hammer loop Reinforced back pockets