These are some very nice bibs. I'm 6'0" (183cm), 32" inseam (81.3cm), and 163lbs (74kg). The size M fits perfectly. Nice that there are no zippers to break at the ankle like other long bibs.
Good quality, well made. Sizing is similar to italian fit. I am 1.78m (5'10") high, 80Kg (176Lbs). It fit me very tight, can't use it. Gave it away, will re-order in XL.