Bicyclo-philewrote a review of Castelli Costante Jersey - Men's on November 20, 2017
Familiarity: I returned this product before using it
This is the kind of jersey you wear to the local coffee shop on a cool morning to meet up with friends and mix with the crowd. Then, once you've finished your hot brew, the group rolls off for a brisk ride, while you turn around and head home to inch the thermostat up a degree or two and crawl back into bed. It looked good but didn't keep you warm.
It's actually a pretty cool jersey. I even slipped it on and fancied myself a retro bad-ass for a moment in the mirror. But it's also like one of those reasonably priced cashmere and cotton blend V-neck sweaters you buy at a Gap-like clothier for casual work attire. Warm and durable enough for a cubicle. But you wouldn't want to wear it into the mountains.
True to Castelli sizing. Go up one.
I don't really see the utility in owning a thin, long-sleeved garment like this. I have nothing against cycling dandies. It's kind of a cool element of cycling. But if this jersey and a base layer was all I had on the north side of the climb, I think I'd be shivering scary by the time I popped out into the sun again. It's a neat design. Although I'm doubtful about its long-term durability.
However, if your local coffee shop has a small locker room where you could keep a change of gear ...