Initially, the Moonstruck and Bark Green (now with yellow highlights) colors were swapped, and I received the wrong ones. Bike Tires Direct was great about replacing them.
Unlike other Castelli clothing, this fits to size if not a bit large. I'm a 45 and the 2XL is a bit too big, though I can live with it. Not sure if they will shrink after multiple washes.
The socks have excellent quality and are lightweight, but not overly thin. The claim to fame for the material is that they are naturally bacteria neutral. After a two-hour ride, this held true. The socks didn't have a strong odor or a chemical smell. They had a faint smell of the inside of a shoe, but nothing gross. It seems to work and testing shows that it is effective over many washes.
Are they worth it? They are to me. Great quality, low smell, and most importantly, they match my bike colors! :)
I wear an XXL size in Castelli Men's Free Aero Race 4 Bibshort. I am 5ft 11in, 190 lbs.
I wanted to try some Castelli Bibknickers so I ordered initially a Castelli Men's Tutto Nano Bibknicker in the XXL size.
The Tutto Nano felt too heavy and thick compared with the Free Aero shorts. So I returned the Tutto Nano's and tried the Sorpasso RoS Bibknicker in a smaller size (XL). Mistake: They are extremely tight fitting (like the Free Aero Bibs). I thought that i would like the fit like the Free Areos, but the fit in the XL size is too tight to allow circulation in my legs. As a result, they do not provide warmth. This is primarily a sizing problem so I would just advise to buy the same size as your Free Aeros if you have a pair.
They are soo good! I've had a hesitancy ordering Castelli clothing online because everyone always gripes about the sizing. The first pair I bought I did size up. To be clear they still fit and I thought everyone was right but since then I've ordered a couple more bibs in my normal size medium. I'm here to say that you should order your normal size if you feel you have a slimmish build. They are snug. It takes an extra second to pull them into place while getting them on but that is how they're designed to be. The right size feels a million times better once your into a bike ride. The pad is wonderful and probably my favorite I've come across in my cycling life. For reference I'm 5'10" and 160lbs.
Size bought: Medium
Tucson Mike here....
I get the pleasure of riding one of Americas finest mountains for cycling (Mt. Lemmon)
Imagine climbing 6,000+' in 26 miles and then bombing back down from which where you came?
That said, I like to use the finest equipment for my exploits and these Castelli Aero Race Shorts seem to fit the bill. The materials, construction and chamois are top-rate. These are aero shorts and fit like a 2nd skin. Unless you want to visit a urologist, I'd suggest going one size up. I have a 30" waist, weigh 155 and wear a large, (vs. a medium with Pearl Izumi and Garneau). The large is "comfortable" for all-day rides; the medium made me feel uncomfortable after a very short time. The value is "meh"; these babies don't run cheap but "compliment" the array of $13k production/dentist bicycles hitting the market!