This is the sleeveless version of Castelli's Core Mesh Base Layer. And as with the short sleeve version, it incorporates an update to the classic fishnet style design. The older design used the holes of what felt like real fishnet in order to trap air between the skin and the second layer of clothing.
However, with the new fully-open mesh design, it still serves to hold the jersey off of the skin. Essentially, this creates a layer of air between your skin and the jersey in order to help you maintain a constant body temperature. But, besides these thermo-regulating properties, the improvements that Castelli brings to the table are several. The mesh is made from a polyester hollow core fiber that's soft-to-the-touch, efficiently wicks away moisture, and has ample stretch. In terms of shape, Castelli calls this 'body wrap,' because it's designed to wrap the body so that the gaps are only in the mesh, not between the mesh and the body. Accordingly, the entire base layer is mesh, save the hems and the 'V' that resides just below the collar.
The Core Mesh is cut long in order to stay comfortably tucked inside your shorts and bibs. Additionally, it was constructed with minimal seams for a maximum level of comfort.
The Castelli Core Mesh Sleeveless Base Layer is available in the color White and in the sizes Small/Medium, Large/X-Large, and XX-Large.
1. Very effective in warm weather. Fish-net style base layer.
2. Ok, I know it's a small world now. But the day a famous manufacturer of Italian cycle clothing is made in El Salvador, something is wrong.
I love Castelli. Obviously this is a historic company that makes an astounding range of cycle clothing and gloves (etc). The function and style of Castelli gear is uniformly awesome (maybe the best in Italy or anywhere else for that matter). But I also own a fair amount of gear made by Santini and DiMarchi. Also excellent gear. And all of it made in Italy (in my experience). Castelli is asking $45 for one ounce of nylon mesh made in El Salvador? Really? And if not in Italy, Castelli can't manufacture this sock-like vest base layer -anywhere- in the EU? Maybe in Romania (like Campagnolo and Sidi). Castelli high-end gear should be made in Italy or at least in Europe. One star off for egregious outsourcing.
This base layer is must have for riding in warmer temps. Anything 80 degrees and above and this thing is on under my jersey. Essentially it's like having air conditioning during the ride because it creates room for air to flow between your jersey and your skin. The faster you ride, the cooler you feel. I own this model and the seamless version and prefer the seamless, but they both work great.
I wash this base layer by hand in the sink and air dry - do not put in the dryer. Also size down for a close to skin feel. You don't want this to fit lose on you. And be prepared for your wife to laugh at you and make fun of you if she sees you walking around the house with this on.
Quality Castelli construction too. I end up washing my right after my ride so I can have it ready again to ride the next day.