Ditch the poncho.

Ever the forward-thinkers, the designers at Castelli decided that it was time water-repellent apparel went mainstream. After coming to this conclusion, they didn't waste any time in creating the Imprevisto Nano Jersey, a short-sleeved, full-zip, summer training jersey created to keep you dry in wet weather while still fitting and feeling like a regular training jersey. Rather than separating the Imprevisto into its own wet-weather training category, Castelli sought to construct the jersey so that it functioned just as well on dry days, becoming a reliable option in case of, not exclusive to, rainy days.

When you're setting out under gray, threatening clouds, the Imprevisto's Strada Nano fabric will loyally stand between your skin and summer rainstorms, making sure water beads up and rolls away rather than soaking through. A soaked jersey can give you a chill strong enough to cut your ride short even in June and July, and this is exactly the situation the Imprevisto hopes to help you avoid. On dry days, Strada Nano will serve to adeptly pull moisture away from your skin, bringing it to the surface to keep you cool and dry.

Though Castelli is known for its sleek, streamlined silhouettes, the Imprevisto employs a slightly boxier cut that befits its distinction as a training jersey, but it does so without veering into club-fit territory. A full-length zipper with an external flap fully seals the jersey off from water, while reflective strips on the jersey's pockets improve your visibility on days that turn dark and stormy. Three standard rear pockets allow room for ride essentials, with a zippered pocket to keep valuables safe from wet weather.

  • Reviews
  • Q & A

Race fit jersey

    This is a race fit jersey. It will run smaller/ shorter and fit tighter all around from torso to jersey sleeve. If you are unsure about your size, size up a size.

    Otherwise, quality and workmanship is on point with what to expect from such a reputable performance cycling apparel brand such as Castelli.

    There should be more color options though.

    Nice summer shirt, but....

    • Familiarity: I've put it through the wringer
    • Fit: Runs small
    • Size Bought: Large

    Like all castellis, this one runs small, but the fit of This shirt is a litle bit lose than others castelli shirts that I have. I doesnt like te way that the zíper been close in the top and the fábric wear out fast! The fabric quality is not compatible to the tag price

    Runs small/short

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: Runs small

    Great top in terms of fabric and comfort. Castelli quality cannot be questioned.
    I have other Castelli tops and in comparison this runs a little shorter in the back as well as overall tighter/smaller.

    Great for summer showers

    • Fit: Runs small
    • Size Bought: Large (good

    This jersey would be great in its own right for summer riding; it's light and breathable. But it's fantastic for warm, rainy days. The fabric doesn't get weighed down by rain. Rather, it seems to repel water, which makes riding in wet conditions a delight.