ASSOS cycling shorts are created following an organic approach. They are designed to "merge" with your body when on the bike.

-25% LESS VOLUME WEIGHT
-23% LESS PRESURE ON GENITAL AREA
+35% EXTRA BREATHABLE FABRIC / INSERT / AEPD
+18% MORE COMPRESSION ON MUSCLE ZONE

Welcome to the next generation: S5

All ASSOS shorts now incorporate S5 technology.

FI. Generation

At the start of the Millennium, ASSOS introduced a comfort revolution by launching "the first elastic insert" with the introduction of its FI. short. This was a quantum leap towards total riding comfort. A decade on, and elastic inserts have become an industry standard. Elastic Interface Technology by ASSOS & CyTech Lab. This is the original. Beware of imitations!

S5 – The Evolution

The previous generation of ASSOS shorts were on the market for 7 years, the models virtually unchanged. This is not normal and practically unheard of within our industry, where superficial changes and "nonsense innovations" are presented yearly in order to create hype and to push sales.
At ASSOS, we do not believe in releasing a new product, unless there is an honest, valid improvement over the existing one.
If ASSOS, usually after many years, decides to discontinue a product and release its successor, there are always valid reasons: our product engineers have developed, and applied, new technologies to further improve your comfort and performance.

Technology

WHAT YOU CAN EXPECT FROM S5
MORE TOTAL COMFORT
MORE TECHNOLOGY
MORE PERFORMANCE

How?

Engineered for high-performance cycling, and made for a cycling body that cycles for fitness, training or racing. ASSOS cycling shorts are not simply apparel, but cycling equipment, which enables you to free your mind, go further, longer and faster.
Every single aspect of our product creation is engineered with one clear objective: to provide Total Comfort when in the saddle, allowing you to unleash your personal potential because, with ASSOS, your physical capacities are not limited by the equipment, but solely by your mind. Focus on your enjoyment!
In return, there is a small "price" we all have to pay: don't expect your S5 shorts to last forever. They were not created with longevity as the main objective. We have, nevertheless, managed to make them more durable* than the previous FI. generation. Your satisfaction is our objective!
DO NOT use ASSOS cycling shorts for leisure activities such as walking the dog or going to buy croissants in the morning on your leisure bike. That would simply be a waste, an overkill, and conflict with the product's DNA.
* might differ depending on how you treat them. Please consult your Owner's Manual for care guidelines.

Construction

New ASSOS Type A.430 compression fabric
New refined ASSOS AEPD pattern design
New next-to-skin fabric compound
New insert shapes
New elastic leg grippers

The "Waffle" textile sandwich insert
New Elastic Interface surface, designed to improve breathability, reduce weight, dry faster and provide extra comfort with increased conformability.

ABC-M closure mechanism
Only on T.FI.13 Lady_S5 for easy opening /closing.

FI.13 semi-vertical insert
Only on FI.13_S5. The shaped insert has an anterior and posterior curved construction for the perfect, anatomical fit and less pressure on the genital area.

The Collection

FI.13_S5 - The world's technological leader
A new benchmark. FI.13_S5 is available in black or white.

FI.13 Lady_S5 - The world's technological leader for women
A high-performance, ladies-specific version of the FI.13. Tailored for the athletic female body, FI.13_S5 is for women who want the ultimate short.

FI.MILLE_S5 - The long distance comfort short
Tailored for total comfort during longer rides, FI.MILLE_S5 features full ergonomic pattern design, providing muscle-compression with total freedom of movement, thanks to its 4-panel construction. Ideally suited to more robust riders who prefer a "less tight" feeling.

FI.UNO_S5 - All-round training and racing short
Representing the ASSOS standard. Raw materials and technology on the FI.UNO_S5 are identical to those used on other S5 shorts, but assembly and details are less complex.