Pay attention to the "Fit Chart" numbers that mfg and most retailers publish on their websites. "Race Cut" is not made to be comfortable when walking, but it's great when riding and has a more supportive/compressive feel to it which I prefer. I'm 5'11", 151lbs and wear size Medium for tops and bottoms in Castelli, Sportful, Vermarc, Pactimo, Garneau, Mavic, Assos, etc.