Alibi

KOO Alibi

The KOO Alibi is a versatile performance sunglasses for road cycling, gravel and MTB, developed for clear vision and high comfort on long rides. Its half-frame design opens up a wide field of vision, while the ZEISS lens with integrated ventilation openings allows air to circulate and reduces fogging. The lightweight Grilamid frame is robust enough for daily training in the Swiss Alps as well as commuting through the city. Rounded, shorter temples were specifically designed for helmet compatibility, so the glasses sit securely even under tight cycling helmets. These features stem from KOO's close collaboration with professional sport and are tailored to the needs of ambitious riders. Depending on the collection, special colour worlds like the Galaxy Edition as well as team designs are also available. These characteristics are verified by the manufacturer and from industry reports.

• Half-frame design for maximum vision and free periphery.
• ZEISS high-performance lens with ventilation openings for better airflow.
• Lightweight, resistant Grilamid frame for the demanding cycling everyday life.
• Ergonomically rounded, shortened temples for secure fit and helmet compatibility.
• Optional Optical Clip for prescription lenses, easily retrofittable.
• Available Spare Lenses (mirror or Photochromic) for different light conditions.
• Signature colours in cooperation with Red Bull – BORA – hansgrohe.

Technical Details and Functions

The Alibi uses a cylindrical lens geometry that offers a wide, distortion-free field of vision and contributes to ventilation through its shape. Depending on the tint, the lenses cover practical filter categories; for example, the Gold Mirror lens is category 3 with around 17% VLT, while photochromic variants cover a large range up to about 75–12% VLT depending on the version. For precision and durability, the Alibi meets common standards like ISO 12312-1 and ANSI Z80.3, which define protection, optical quality and UV filter performance. The overall package remains pleasantly light: KOO states around 25g, making the glasses barely noticeable on long climbs or in rough terrain. Additionally, there are exchangeable nose pads (including bridge and Asian fit options) for fine-tuning to different facial anatomies. If you cover multiple bikes and applications, you can change the lenses without tools and adjust the glasses to weather and terrain. These specifications are confirmed by the manufacturer and independent reviews.

Applications and Benefits

On the road bike, the Alibi convinces with free vision in drop bar position, stable fit and suitable tinting for strong sunlight on passes or changing conditions in road tunnels. Gravel rides benefit from the robust Grilamid base and the cylindrical lens, which shields dust and headwind over a large area without restricting the periphery. On MTB trails, the ventilation openings help with temperature and humidity management when climbing steeply and the glasses must not slip on fast descents afterwards. Practical tests particularly highlight the relaxed fit, good ventilation and large field of vision, which brings noticeable advantages in hilly terrain and changing light. For fans of the pro look, the team designs are a plus without changing the technical substance. So the Alibi covers everyday life from commuting to interval training and remains pleasantly unobtrusive even on long tours. These application advantages are proven through tests and team cooperations.

Accessories and Customisation

For fine-tuning, replacement lenses in mirror and Photochromic versions are available, so you can choose the tint to match season, region and personal preference. The Optical Clip system allows you to cleanly integrate prescription lenses into the glasses if you want to ride without contact lenses. Additionally, bridge and Asian fit nose pads are available to optimise the contact and airflow at the nose bridge. The tool-free assembly is designed for low-maintenance operation, so you can quickly change lenses or pads before rolling out for training. This keeps the Alibi a durable companion that flexibly adapts to your setup and the changing conditions in Swiss cycling everyday life. Information about accessories and compatibility comes directly from the manufacturer.