Today I have just completed riding the entire Natchez Trace National Parkway. 450 miles in 6 days. I wanted shorts that I could wear all day in comfort, and these fit the bill. I own Castelli shorts so I knew to size up, I usually wear a M so I ordered 2 pair in Large. I wore a pair on a training ride and quickly realized they were too small. I am 5'10 and 168 lbs. I quickly called Biketiresdirect and they rushed 2 pr. of XL and after I tried one on, I returned the large. These are awesome shorts and I really appreciate the service I received. My trip was great- perfect weather and no complaints from my 61 year-old body.
I am 6 ft. tall, 190 lbs, and have normal body proportions. These shorts run a size too small. They are tight in the legs, but not too tight for cycling. The chamois has a nice feel for extended rides, but I don't think it comes up quite high enough in the front. My main dislike is that it is shorter at the waist than it should be. I have to make sure I wear one of my longer jerseys unless I want my stomach to show.
I have found the Castelli shorts to be far more comfortable than others I have worn. They do run about a size smaller than others. These provide more compression on my legs which helps on longer rides.
The best shorts I own, including a slightly different Castelli design. Bought them a couple of weeks ago. So far, used them on rides of 25, 65, and 75 miles. Not sure what all those different panels and fabrics are for, but they add up to an excellent fit. The chamois pad isn't real thick but it works just fine and stays in place. As others have noted, order at least one size larger than usual.
Weather for the last ride was fairly warm by Puget Sound standards - high 80s. Jersey and shorts were completely soaked. Shorts were very comfortable.
Expensive, even with the BTD sale price, but worth it.
Good quality bike shorts (and bibs) are hard to find. I am glad I found the Endurance X2 shorts, I have several pairs. I think they are the best no-butt-lube shorts out there. Hopefully they'll keep making them and find and replace them with something better !!
I bought a pair of these shorts and then immediately went out and bought another pair of them (bib shorts style). So comfortable on long training rides or centuries. I also like the way I look in these shorts. Better value with comparable comfort to Assos shorts. Unique chamois is the key to the comfort of these shorts. The fit is snug so if you want extra room in the shorts, you may want to order a size larger. I like the snug fit on my legs but others might like it a bit looser.
Shorts run small, so I sized up one size. Shorts and chamois mold to the body to provide a comfortable ride with full cushioning. Also, the shorts wick sweat away from the body amazingly well...
I recently used these for a century ride and they were very comfortable. But they run small. I had to return a Large and re-order an XL when the sizing chart indicated a Large.
It was a sad day when Castelli changed the design of these shorts. I have always fit great in the large size. Now I can not get into even the 2 XL. The new fabric has no give to it.
I have been buying the Castelli Velocissmo short for years and really think it hits the value/comfort mark. I usually get a couple seasons out of a pair in heavy rotation with a couple other pairs and thought to upgrade to the Endurance X2 on the last order. While this is still a very nice pair of shorts, I don't find them any more comfortable than the Velocissmo. But of particular consideration for some people is that the Endurance Short runs about a 12 size smaller than the Velocissmo. So if you ever found yourself in the middle of some sizes this may be a plus for you. But if you are a solid medium, for example, in the Velocissmo, you might want to size up if you want to try this one.