Castelli Sorpasso RoS Bib Tights: Windproof Cold-Weather Tights (£139.99)
The Castelli Sorpasso RoS is a cold-weather bib tight with windproof front panels, aimed at riders who train outdoors through the winter. We have not tested it ourselves. This page collects the listed features, the Tredz price and where it fits a triathlete’s winter riding.
Available now: Castelli Sorpasso RoS Cycling Bib Tights — £139.99 at Tredz (RRP £220.00), correct at time of writing, 2 October 2026.
What the manufacturer and retailers list
- Wind protection: retailer listings for the Sorpasso RoS describe Gore-Tex Infinium windproof fabric across the front of the thigh and knee.
- Body fabric: listings name Nano Flex 3G, described as stretchy, warm and water-repellent.
- Temperature range: listings quote roughly -5 to 8°C.
- Pad: Castelli’s Progetto X2 Air chamois, quoted at up to 15 mm of padding at the sit bones.
- Fit details: zipped ankle hems for getting them over shoes, in sizes XS to 3XL, with a quoted weight of 327 g in size L.
Specs are taken from retailer listings and Castelli’s product page for the Sorpasso RoS Wind tight. Variants differ, so treat the figures as indicative.
Where it fits a triathlete’s training
The points below are our reading of the listed specs, not test results.
- Cold, dry road rides. The windproof front panels are aimed at riding into a headwind at single-digit temperatures.
- Turbo and outdoor mix. Listed temperature ranges stop at 8°C, so on a mild day they will probably run warm.
- Check the version. Castelli sells several Sorpasso variants and retailers describe them differently, so confirm the fabric details on the Tredz page before buying.
Where to buy
Tredz lists the Castelli Sorpasso RoS Cycling Bib Tights at £139.99 at time of writing, and the link below goes to the same product page.
Related guides
See also our guide to the best bib tights for autumn and winter, our Endura Pro SL bib tights II review and the Castelli Superleggera bib shorts review.
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