100% S3 Sport Performance Cycling Sunglasses - Vented Shield

In this review the 100% S3 Sport Performance Cycling Sunglasses are recommended for serious road, gravel, and triathlon riders who want a wide field of vision and dependable sun protection. The single biggest reason to buy is the combination of a 5-base cylindrical shield lens with Ultra HD polycarbonate clarity and effective ventilation, which together deliver unobstructed sight and reduced lens moisture while riding hard. Fit and finish feel premium, and the included hard case and spare parts make these a practical, everyday performance option.

Key Features

• Ultra HD lenses: High-impact resistant polycarbonate lenses provide sharp visual clarity and reliable sun protection for high-speed riding.
• Wide field of vision: The 5-base cylindrical shield design offers 360 visibility and a broader peripheral view for better situational awareness.
• Ventilation system: Lower air scoops and intake vents help keep airflow moving across the lens to reduce fog and lens moisture during intense efforts.
• Secure fit: Ultra-grip rubber on the nose and temple tips keeps the frame stable even when sweating or riding rough roads.
• Durable frame: Lightweight and flexible TR90 material balances comfort with resilience for long rides.
• Interchangeable protection: Scratch-resistant lenses with UV400 protection and easy lens swaps let riders adapt to changing light with HiPER or photochromic options.

Who It's For

The S3 is aimed at cyclists and triathletes who prioritize wide, unobstructed vision and effective airflow in a single shield frame. It suits riders who want a California-designed look with practical performance features like hydrophobic coatings and included spare parts for frequent use.

Riders who need ultra-heavy-duty hinges for extreme abuse or those wanting a completely rimless, fashion-forward eyewear might look elsewhere; some users report mixed durability at the hinge and stability depending on face shape.

Pros & Cons

Pros

• Excellent clarity and sun protection from lightweight, high-impact polycarbonate lenses.
• Strong peripheral visibility thanks to the 5-base cylindrical shield design.
• Effective ventilation and hydrophobic/oleophobic coatings that reduce fogging and repel moisture and oil.
• Thoughtful kit: hard case, microfiber bag, replacement lens, and extra nose pad add real value.

Cons

• Durability at the hinge is mixed in customer reports, so riders who are very rough on gear should inspect fit carefully.
• Photochromic models do not include the replacement lens accessory, which may matter if frequent lens swaps are desired.

Specifications

Our Verdict

The 100% S3 balances wide visibility, ventilation, and dependable lens protection in a well-equipped package, making it a smart buy for road riders and triathletes who value clarity and airflow. With useful accessories included and thoughtful fit features, it represents good value for cyclists who treat sunglasses as performance gear, while those needing maximum hinge ruggedness should inspect fit and handling before committing.

Frequently Asked Questions

Are replacement lenses included?
Most models include a replacement lens and microfiber bag, but photochromic versions do not come with the extra replacement lens.

Will these fog on long climbs?
The lower air scoops and ventilation reduce lens moisture and, combined with the hydrophobic coating, help prevent fog during sustained efforts.

Do they block full UV?
Yes, the lenses provide 100% UV protection (UV400) and also have scratch-resistant coatings for daily use.