A few years back Castelli pioneered the first Omloop thermal short mdash inspired by pro riders cutting off their knee warmers to just the bend of the knee at the Omloop Het Nieuwsblad on a brisk sunny morning. And thus Castelli set about making a bibshort cut right to the bend of the knee eventually culminating to the ingenious invention of the Castelli Men’s Nano Flex Pro Race Bibshort.