Named after the famed Mortirolo pass, the Castelli Mortirolo Jacket lets you ride comfortably in temperate winter climates. Utilizing some of the technology found on the Espresso Due, this jacket is geared more for riding in moderate temperatures (higher than 46 F) while providing ample wind protection.The Mortirolo is constructed in two parts. The front utilizes WindStopper X-Fast 2 Fabric, which features four-way stretch, designed to eliminate pulling and bunching while ridingt. Since full windproof coverage isn't needed in moderate temperatures, air-permeable polyester fabric on the back allows body heat to escape while still keeping cool wind off your core. The Mortirolo is cut in a slim fit to prevent flapping as you ride. The two vertical zippers on the front of the jacket give maximum ventilation when used with the full-length zipper to dump heat while you are climbing. For a light air flow, simply adjust the side vent zippers to where you want them.The Castelli Mortirolo Jacket is finished off with an elastic gripper along the bottom hem to keep the jacket from riding up. It comes with three rear pockets for your riding essentials and rear reflective tabs and piping on the chest to keep you visible during low-light conditions. It comes in four color combinations- Red/black, Black/white, Anthracite/black, and Camouflage/black and is available in Small through XXX-Large.
Strengths: Very good in the Windblocker department and vents very well out the backside. The rear pockets seem to be very well placed and are easy to access. The silicone gripper hem helps keep the long tail in place and keeps it from creeping up during the ride. The scalloped collar fits very well around the helmet line and material is about the right thickness to keep from building up too much warmth. The fleeced lining makes the warmth level near perfect on or off the bike at stops. My initial ride with this jacket was at 15F with a base and mid-layer and it worked very well.
Weaknesses: This is a European cut and runs VERY small. I normally wear a medium and could have gone up to an XL if I wanted to wear thicker layers underneath. In all fairness, this jacket is made more for road riding than off-road and XC work, so this may point to why it is so form fitting. The sleeve length is on the verge of being too short and is barely acceptable.
I was able to grab this jacket at a huge discount of almost $100 off of retail and is an acceptable product at that price point. Anything more than that and you may experience buyers remorse.