FIANDRE – Prescription Sports Glasses with DCHROM® Photochromic Lens

DEMON introduces FIANDRE, prescription performance eyewear built for athletes who train and race outdoors and need a single, complete solution: reliable protection, long-wear comfort, and crisp vision when light and conditions change quickly.

Designed with a bold, modern silhouette and true sport functionality, FIANDRE is ideal for cycling and running, yet versatile enough for trekking, hiking, and multi-sport outdoor use anywhere eye protection and visual clarity make a difference.

DCHROM® Category 0–3: one lens for every light condition

FIANDRE’s standout feature is the DCHROM® photochromic lens (Category 0–3). It starts fully clear (Cat. 0) and gradually shifts to a smoke tint (Cat. 3) as UV exposure increases—covering an exceptionally wide range of environments with one lens, no swaps.

What you’ll notice on the road or trail

• Low light & shade (dawn, dusk, forests, overcast): stays clear or lightly tinted for better detail and contrast—no “sunglasses effect.”
• Rapid transitions (sun ↔ shade): automatically adapts to reduce eye strain on mixed routes.
• Bright sun: reaches Cat. 3 smoke to manage glare and reflections more comfortably.

Result: steadier vision, better focus, less fatigue especially on long sessions or variable terrain.

Built for real sport protection (without giving up prescription)

FIANDRE is shaped like a true wraparound sports visor while remaining compatible with optical correction. The wide coverage helps to:

• limit wind and airflow
• block dust and fine particles
• shield from insects and debris (front and sides)
• reduce peripheral distractions for smoother visual continuity
• stay stable during fast movements and intense efforts

Despite its protective profile, FIANDRE remains ultra-light (30 g) reducing pressure on the nose and temples for comfort that lasts.

Best uses by sport

Cycling (Road, MTB, Gravel, Touring, Cyclocross)

• MTB: wrap coverage improves safety against branches, dust, insects, and debris; the 0–3 lens stays clearer in the woods and darkens on exposed sections.
• Road & endurance: consistent protection from wind and particulates; automatic adaptation means no manual changes when clouds, shade, or sun shift.
• Mixed disciplines: one pair that handles travel, training, and varied routes.

Running & Trail Running

• Trail: constantly changing light (shade, ridgelines, reflections) is where DCHROM® shines; wrap design helps protect from dirt, insects, and trail debris.
• Road: less tearing from wind, less irritation from dust—clearer, calmer vision for steady pacing and long runs.

Other outdoor sports

• Hiking / mountaineering: reduces side/top light intrusion; lens adapts from woods to exposed ridges.
• Ski / cross-country (in suitable conditions): a lightweight alternative to goggles with stable grip.
• Water sports / spray environments: added shielding and stability help maintain consistent vision.
• Tennis (indoor/outdoor): photochromic range supports quick environment changes.

Prescription system: internal optical insert (RX clip)

FIANDRE uses an internal RX insert made from TR90 for strength, low weight, and stability during movement.

Supported prescription range

• Sphere: up to ±6.00
• Cylinder (astigmatism): ±2.00
• Compatible with progressive and bifocal solutions thanks to the large insert design.

Insert lens dimensions

• Height: 40 mm
• Length: 45 mm
• Base: 6
  (Corrective lenses must be produced by your optician based on your prescription and preferred treatments.)

Materials & technical features

DCHROM® photochromic polycarbonate lens

• Reacts to UV with a reversible darkening/clearing cycle
• Lightweight and impact-resistant (safer than brittle materials)
• UV protection + improved visual comfort
• 0–3 range for maximum versatility in one lens

Ultra-light TR90 frame

A technical blend designed to be:

• flexible and durable
• comfortable for long wear
• stable under high intensity
  It adapts to the head shape without squeezing, while maintaining a secure fit.

Grip & stability

• Hypoallergenic Megol nose pads and temple tips
• Grip technology helps prevent slipping from sweat, vibration, or sudden movement

Size & packaging

Frame measurements:
Width 150 mm – Height 57 mm – Temple length 120 mm – Lens base 8

Products ship in original packaging; in some cases, the case color or shape may vary from images shown.