Reference Prosafety :
No break-in time necessary. These men's lightweight bibs are ready for the toughest jobs, made of stretch canvas that feels comfortable from the start. Built to last, the overalls have triple-stitched seams, reinforced cuffs and a double layer at the knees. The extra bit of stretch gives you enough flex to bend and squat without a problem. Slightly loose fit, cut for a range of motion.