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Assos FI.Uno S5 Bib Shorts


Assos set out to develop an all-around racing and training bib short and what they produced was the FI.Uno S5. The focus is to provide a cyclist with a taste of Assos's legendary AEPD anatomic fit coupled with a comfortable chamois, high tech fabrics from Assos's Lugano labs with an eye on value. When you consider the time, effort and quality materials that went into this product, it is amazing that they arrive at their current price point. This performance orientated value bib is a best seller every season.

The FI.Uno bib shorts use the Assos proprietary A430 fabric panels throughout the body of the bibs. This magical fabric offers plenty of muscle compression and is super low volume. Being low volume and sheer, it offers plenty of ventilation and has great wicking capacity. These panels are all stitched together using over-locking seams provide a tight bond between panels and add elasticity. As with all Assos bibs, the rear mesh upper is one-piece for added support and completely breathable. The classic S5 chamois has the familiar klinik blue top sheet with dimples for air flow and heat management. The core of the S5 features multiple densities of material for supreme comfort.

The fit of the FI.Uno is decidedly Assos. This means all panels of the FI.Uno bibs are anatomically cut and when stitched together, form a perfect synergy called Advanced Ergonomic Pattern Design (AEPD II). Every panel is pattern-cut in an anatomical shape to mimic the body while in the cycling position. These bibs are made to fit perfectly while you are riding or in the cycling position, not standing around or sedentary.

We proudly offer the FI.Uno in multiple color ways and all sizes. Wash bag is included with every set of bibs.

See where this garment fits into the synergistic Assos Layering System


  • Sheer 430 fabric offers wicking and muscle compression
  • AEPD II anatomic fit
  • Performance and technology meets value
  • S5 Uno chamois
  • Over-locked seams
  • Multiple panel construction
  • Welded leg grippers
  • Includes wash bag

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