Home Page

Cart, contains 0 items

When autocomplete results are available use up and down arrows to review and enter to select. Touch device users, explore by touch or with swipe gestures.
Expert Help
Earn Rewards
  • Just In
  • Learn

Sorpasso RoS Bib Tight - Women's

5 out of 5 stars
4 Reviews
Current price: $167.99 - $179.99 Original price: $239.99
Up to 30% off
Color:Belgian Blue/Silver Reflex


Size Chart


Sorpasso RoS Bib Tight

Chances are you’re mulling over how to stay warm and dry on winter rides across a wide range of conditions, from rain to wind, to freezing. The Castelli Sorpasso RoS Bib Tight is designed to expertly satisfy winter riding comfort across beautiful winter landscapes in the rain or shine. Castelli's familiar NanoFlex technology boasts improved water repellency, allowing the Sorpasso RoS Bib Tight to shed water with relative ease while maintaining enhanced breathability and warmth. As you're in the riding position, the anatomically mapped 3G paneling provides ample stretch to allow unrestricted movement at the knee and hip. Extra insulation comes from Nano Flex Xtra Dry fabric, which is sewn to the upper front and thighs to maintain body heat to maximize winter performance.

The Sorpasso RoS Bib Tight uses Castelli's Progetto X2 Air seamless Donna chamois that is designed peak comfort and performance during long winter base miles. Reflective panels cover the calf zips for added security in low-light riding in the cold mornings, and the Sorpasso RoS is rated for rides ranging from 32-54 degrees F, which nets you four more degree resistance to the cold than does the bib-less Sorpasso design.


  • Winter miles bib tight comforts and performs through rain or shine
  • Nano Flex 3G fabrics feel soft and repel water under heavy clouds
  • Heavier fabrics on front and legs provides muscle-specific insulation
  • Designed for stretch and compression in all riding positions
  • Reflective panels on calves add extra visibility for roadway safety
  • Rated for rides ranging 32-54 degrees F
  • Item #CSTZ7E0
[face fabric] Nano Flex 3G, [hips/thighs] Nano Flex Xtra Dry
spring, fall, winter
Progetto X2 Air seamless Donna
lie-flat elastic straps
calf piping
Claimed Weight
[small] 10.4oz
Manufacturer Warranty
1 year

Overall Rating

5 based on 4 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 4 reviews

Fits Slightly Large

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


Selecting an option will reload the available reviews on the page
5 out of 5 stars

December 13, 2023

Great bibs!

I returned this product before using it

I really loved these bibs overall; however I ordered a medium, based on the size chart and they were quite large overall, so they are enroute back to Backcountry. For reference, I am 5'4, 138 lbs, athletic build, with a long torso, and The chamois was HUGE and there was extra fabric everywhere, especially around the waist, thighs and chamois.

Jamie T

Originally reviewed on Backcountry.com

5 out of 5 stars

January 17, 2023

Love Love Love

I've put it through the wringer
Size Bought:
5' 2"

This is my first pair of bibs, and I am very impressed at the quality and comfort. I normally would not spend this much, but it was worth every penny. Staying warm is worth the extra $$$. I ride in very cold and rainy conditions. I have worn these in the mid teens and I stayed warm. My rides are 19-22 miles per day. I have short legs, so the seam near the knee falls lower than it should, so I have to pull them up a bit, but they stay in place. The pad is supreme. I may see if they have shorts with that pad, it is amazing. I can handle the temps with these and water just beads off them. I highly recommend.

Colleen M
5 out of 5 stars

January 28, 2022

Warm and comfortable

I've used it once or twice and have initial impressions
Size Bought:
5' 5"

These feel well-insulated and of quality construction. I've used them in temps ranging from 30-40 degrees Fahrenheit and they are warm enough on the warm up and cool down without feeling too hot while riding at intensity. I usually wear a size XS for Castelli and cycling gear in general and these in XS fit well. I'm just under 115 lb and 5'5". They are snug in the way cycling gear should be, and as referenced by a below review, the bib straps are a little tight at first, but not noticeable while riding. I also tried the size S and it felt a little loose around the waist. These are true to size and quite nice.

Lisa H
5 out of 5 stars

November 1, 2020

Comfy and Warm!

I've used it once or twice and have initial impressions
Size Bought:
5' 2"

I'm very happy with these tights. They are comfy and soft, and they keep my legs nice and warm. I've worn them in temps down to the mid 30s. One thing to note: the length of the torso is a bit short. I am short-waisted and the straps fit snugly on me. If you have a long torso you might find these don't fit you very well.

Bernie P