Rapha Core Winter Bib Sizing
 

I'm debating size Small vs Medium. I have the Rapha core short bibs in medium and I think size small would be too tight. I'm 5'9" 155lbs with a 31 waist.

The size chart for the Winter (long) and Summer (shorts) are the same. Small is a 30.5 Waist and Medium is a 33.

Should I just stick with Medium?

I wear the same size in both shorts and tights.

I am 5'5" and 138lbs-145lbs depending on the season and I take a XS in both the Core bib shorts and winter bibs. For me the XS winter bibs are the perfect length since I am short and the Core range has just right amount of stretch

If you take a medium in the core bib shorts I'd assume the same for the winter ones unless you have shorter legs like me