MTK FISHwrote a review of Castelli Free Aero Race 4 Short - Men's on July 4, 2019
Familiarity: I've put it through the wringer
Fit: Runs small
these are insanely comfortable better than a tri chamois! I forget they're on. However they fall apart after 4-6 weeks in the crotch. they run small like all roso corsa does order 1 size up. I do use these every day and ride 30-50 miles on em. i rotate multiple pairs. I hope castelli fixes these stiching issues FAST because they are so comfortable!