Grundens 116 Clipper Bib Pants
The Grundens Clipper 116 falls into Grunden's "medium-duty" class, but really the only differences between it and the "heavy-duty" class is a lighter but still incredibly tough PVC coated cotton with an active fit for increased freedom of movement.
The heavy-duty gear, for most people and applications, is just that - heavy. This is generally the one you want for most situations. We carry it in white so you won't cook in the summer sun.