"Castelli's latest Perfetto RoS 3 x Polartec AirCore foul-weather jacket is not technically waterproof, because apparently cyclists simply don't ride in the rain as much as they used to. Castelli knows wet winter riding (remember the Gabba). But, they also know that, between indoor training, more reliable forecasting, and shifting climates, most cyclists simply don't ride that often in the rain."
"First off, that magic forever chemical PFAS is out, as it became abundantly clear how bad it is for the environment. So, every company has had to reimagine waterproof garments. And by starting over from scratch, Castelli took the opportunity to rethink what cyclists really need in weather-protective clothing. Staying dry is important, and keeping water out is a key aspect of that. But for cyclists who are working hard pedaling, staying dry inside is equally as important (if not more so)."
Castelli redesigned the Perfetto to prioritize breathability over full waterproofing, acknowledging that fewer cyclists ride in rain. Environmental concerns eliminated PFAS, forcing a ground-up rethink of waterproof garments. Castelli worked with Polartec to create a new 3-layer AirCore fabric intended to balance internal dryness during high-exertion rides with external water resistance. Improved indoor training, more accurate weather forecasting, and shifting climates reduced cyclists' exposure to rain, influencing the design priorities. The jacket focuses on keeping riders dry from sweat first, with weather-proofing as a secondary, but still critical, consideration.
Read at Bikerumor
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