GRAVEL – Sports prescription glasses with DCHROM® 0–3 photochromic lens

DEMON introduces GRAVEL, the sports prescription eyewear designed for those who train and race outdoors and demand the best in every condition: real protection, all-day comfort, and consistently sharp vision when light and surroundings change in minutes (sudden sun, clouds, woods, tunnels, wind, dust, and debris).

GRAVEL features the DCHROM® photochromic lens, category 0–3 an extremely versatile solution: one single lens that automatically adapts to changing brightness, so you don’t need to carry alternatives, you don’t have to stop to swap lenses, and you can stay focused on your ride from the first to the last kilometer.

Modular “2-in-1” structure: removable lower rim

GRAVEL’s signature feature is its modular setup: the lower part of the frame can be removed, giving you eyewear that adapts to your style and your route.

Two configurations, one goal: performance

More open setup (rim removed)
A cleaner, sportier line, greater ventilation, and an even lighter feel on the face. Ideal when you want maximum freedom especially on hot days or during high-intensity activity.

More protective setup (rim installed)
Wider coverage and enhanced shielding against wind, dust, dirt, and micro-debris. Perfect on exposed sections, for gravel/MTB, on descents, and whenever you need extra protection and stability.

Instant customization

An extra rim is also included to create a two-tone effect and personalize the look right away (white or black depending on the frame variant). A detail that combines style and function: change your look without giving up performance.

DCHROM® 0–3 photochromic lens: it adapts to the light—you just keep pushing

At the heart of GRAVEL is the DCHROM® 0–3 lens, developed to cover a very wide brightness range, transitioning progressively from clear to dark.

How it performs in real use

Dawn, dusk, shade, and overcast skies
The lens stays clear or only slightly darkened to maintain contrast, depth perception, and detail definition. Result: natural, precise vision even in “flat” or variable light.

Fast light changes (woods, tree-lined roads, alternating sun/shade)
It reacts automatically, reducing visual stress: fewer sudden brightness “hits,” less fatigue, and a more stable perception of the route.

Strong sun and direct light
It darkens up to category 3 with a smoke tint, improving glare and reflection management. More comfort, more control, more visual continuity.

The real advantage: a more relaxed, consistent view that translates into better focus, less eye strain, and steadier performance especially on long rides and mixed routes.

True performance: protection, stability, and comfort in every situation

GRAVEL is built to work like true sports protection without sacrificing vision correction. The wraparound shape creates an effective barrier during activity:

• reduces the entry of air, dust, and particles
• protects from insects and micro-debris, even from the sides
• improves visual continuity by limiting peripheral distractions
• stays secure with sweat, vibration, and rapid movements

And thanks to its low weight (30 g), GRAVEL remains comfortable even as the outing gets longer: less pressure on the nose and temples, more comfort and focus to the finish.

Recommended sports: one pair of glasses, multiple disciplines

GRAVEL is designed for those who practice different sports and want one reliable product.

Road cycling
Continuous protection from wind, airborne particles, and insects, with perfect handling of light changes between exposed stretches and shaded areas.

Mountain Bike / Gravel
Ideal on trails and dirt roads: more shielding from dust and debris, and a lens that helps you read terrain and obstacles as the route alternates between woods and clearings.

Running / Trail running
Stability on descents and direction changes, with vision that stays adapted to shade and sun. High comfort even over longer distances.

Mountains and hiking
Excellent on variable routes: side light, reflections, and constantly changing conditions. A practical, complete solution for outdoor use.

Prescription lenses

You can request a quote to purchase GRAVEL with prescription lenses through one of our partner opticians.
Click here for more information about Demon’s lens prescription service and receive the glasses at home already fitted with your prescription, ready to use.

Optical insert clip: stable, comfortable vision correction

GRAVEL is designed for those who need vision correction during sport. The internal optical insert is sized to provide a wide field of view and a stable fit.

• Supports sphere up to -6.00 / +5.00
• Supports cylinder (astigmatism) ±2.00
• Also compatible with bifocal and progressive lenses

Technical specifications

• UV protection: UV400 (maximum UV-A and UV-B protection)
• Frame material: TR90 Ultralight
• Weight: 30 g
• Lens type: DCHROM® photochromic lenses, category 0–3
• Included: extra rim in White or Black (depending on frame color contrast), microfiber pouch, hard case
• Sports: road cycling, mountain bike, running, trail running, mountains & hiking
• Fit: Unisex (men and women)
• Dimensions: width 150 mm; height 57 mm; temple length 120 mm; lens base 8
• Optical insert dimensions: lens height 40 mm; lens width 45 mm; base 6
• Prescription range supported: sphere -6.00 / +5.00 – cylinder ±2.00
• Compatibility: bifocal and progressive lenses

Packaging note

Products are shipped in their original packaging; in some cases, the color or shape of the case may differ from what is shown.