I've had a number of pairs of Castelli bibs over the years, including the predecessor to the Velocissimo IV. I always take a XL. I'm 6'1 and 180 lbs.
I have two pairs of the Velocissimo IV bibshorts. Both are quite short in the torso. When you first put them on, you think they are going to cut grooves in your shoulder blades. They're more comfortable while riding. I may have the straps lengthened.
But aside from being quite short in the torso, these are great bibs. Compression is just right, and they are very comfortable for long rides
I love Castelli gear. ALL my gear is Castelli. In fact, the Velocissimo has been my go to bib short for several years - great fit, good value. But this version is terrible. Horrible.
I wasn't so sure when I saw the photos of the cut of the waist to the straps, but I finally decided to buy a couple of pair and give them a try. I totally regret that move. They are super uncomfortable at the waist, and they do feel a little downgraded in terms of quality from past years' models.
I've been disappointed that Castelli has kept the same design two years in a row now. If they go back to a cut similar to the previous versions I'll buy it again, but if not I'm going to have to find another bib short to buy.
I like these bibs a lot. Compressive, nice chamois and well made. However the straps are short. I had mine lengthened by 3 inches and they are still a little short. I'm 6 ft and 200 lb and i bought an xlarge
Compared to other multiple Castelli shorts I own the bib straps on these were very short. Almost unwearable. I had a local seamstress add some length and now the shorts fit correctly. Almost seems like Castelli got their specs off on these.
Unfortunately, l have not had the chance to wear these yet. Castellis sizing threw me off. I realized that l need xxxl size. In North America, l usually wear either large or XL. Nicely made l have other Castelli bibshorts that fit me more comfortably.
I have many Castelli products, including bibs, and generally think very highly of the products. I usually wear an xl in Castelli bibs and ordered that size couldn't get it above my thighs. Returned it for a 2xl (very prompt service BTW). Fits in the torso but the bib straps are much too short and dig into my shoulders. This is strange given I'm not particularly tall at 5' 10 and not overweight (well, maybe 5lbs). Otherwise, appears to have the usual fine quality as other Castelli products.
I am giving a 4 but my heart says 3.5. I assumed they were the updated version of the Velocissimo which I really liked. These feel like the model below. The length is a touch long for my inseam. The chamois is ok but I havent used it for anything over 2.5 hours. There were a few loose threads I had to trim so I cant say the QC is what I expected. The price was fair so its a fine mid week bib.