I bought the mens summit 12 hour bib shorts, L sized. I'm 1.78m, 79 kg. I cycle some 200 km on road per week all year round, and every few months go to a longer brevet. I usually have some issues with the fit of cycling shirts as I also do a bit of weights/calistenics and have a slightly more muscular physique compared to your traditional stick-person cyclist, especially across the shoulders and arms, but it rarely extends to cycling bibs. This time, however, I did have quite a few problems with the 12h bibs. Based on the measurements, an L would have been a fairly loose fit on me, while an XL would look like a sack of potatoes, so I took the L. Shipping was very prompt, and once I tried it on it fit fairly tight (which, when I think about it, was a bit strange, since I have a bunch of other L sized bibs, such as Castelli, Assos and Nortwave primarily, and none of them felt so tight), but no issues were immediatelly apparent. However, the moment I started cycling, it started chaffing quite heavily on the top outer part of the left thigh - no matter what I did, it was always the same spot. It looked like something to do with the inner seam, since the model has fairly big loose seams on the inside, whereas pretty much all other bibs I have have much smaller seams that are fully sewn into the bibs. Potentially, the sizing was off, but that was what the sizing charts are supposed to be used for, and I remeasured myself at least a dozen times before buying... I wrote to customer support immediatelly after the first ride, but the moment I took the tags off for the ride, my return guarantee was void, and they only wrote back once recommending to wash it, since something might have been left after the production process. I tried washing it and riding several more times, but it all ended up the same - within 10 minutes I would have a very red and sore thigh. The company did not respond to my follow up emails. At best, I can resell these at half price, and even then it's unlikely anyone would buy it. At best, I can resell these at half price, and even then it's unlikely anyone would buy it. Worst 300 Eur spent in my life. Instead, I went and bought Assos Mille GTS Bib shorts L sized for 190 Eur, and they worked out much better. Not going to recommend Pactimo to any of my friends.