The Imprevisto Nano Jersey takes flight where Perfetto Light left off. Based on the familiar design except in a lower volume and lighter package, the Imprevisto Nano breaks new ground. And similar to the Perfetto, we see a lightweight and high-stretch fabric for a tight, aerodynamic fit. Windstopper X-Lite Plus fabric is still used for total wind and water protection. Castelli's Nanoflex inserts under the arms allow for temperature regulation, while an extra-long storm flap off the back of the jersey protects you from spine-chilling wheel spray. The Imprevisto Nano jersey includes a full-length YKK Vislon zipper for positive action, under any weather condition. A few rear reflective tabs are added for additional protection during overcast days. Three rear pockets with mesh lowers allow for drainage.