Product description
LIEGI – Prescription sports glasses with DCHROM® photochromic lens
DEMON presents LIEGI, the new prescription sports glasses designed for people who regularly practice outdoor sports and demand a product that is complete in every respect: real protection, long-lasting comfort, stability during activity, and high visual quality in changing light conditions.
LIEGI was created to offer the same performance and versatility as the benchmark models in the range, but with one important plus: in addition to the adjustable nose pad, it also features adjustable temples, for even more precise fit customization. The result is eyewear that adapts better to the face, stays more stable during movement, and remains more comfortable even on long outings.
Designed for road cycling, mountain biking, running, trail running, mountain sports, and hiking, LIEGI combines a lightweight, wraparound structure with DCHROM® category 0–3 photochromic lens technology, delivering consistently effective vision from dawn through full sunlight.
One lens for many conditions: DCHROM® photochromic category 0–3
At the heart of the LIEGI model is the DCHROM® category 0–3 photochromic lens, designed to automatically adapt to changing light during sports activity.
The lens starts from an almost transparent / very light state in low-light conditions and gradually darkens up to category 3 as UV intensity increases. This ensures excellent light management across a wide range of scenarios, without the need to change glasses or replace the lens.
In practice, what does this mean?
Dawn, dusk, woodland, overcast skies, or low light
The lens remains very light, helping maintain a high level of detail perception and ideal visual comfort when more brightness is needed.
Routes with alternating sun and shade
When moving quickly from exposed areas to shaded sections, the lens adjusts automatically, improving visual continuity and reducing eye strain.
Full sun and intense light
In strong UV conditions, the lens darkens up to category 3, helping protect against glare and making vision more relaxed and comfortable.
This makes LIEGI particularly suitable for those who train at different times of day, tackle mixed routes, or want a single pair of glasses that can accompany them in many environmental conditions.
UV400 protection: maximum shielding for the eyes
LIEGI lenses provide UV400 protection, meaning maximum protection against UVA and UVB rays. This is an essential feature for anyone who spends a lot of time outdoors and wants to protect their eyes not only from the discomfort of bright light, but also from exposure to ultraviolet rays.
Sporty, wraparound, and stable design
LIEGI is a true performance sports eyewear model, designed to provide broad protection and effective coverage during movement. Its wraparound shape helps protect the eyes from:
- air and wind
- dust and particles
- insects
- small debris coming from the front or sides
- peripheral light interference
The structure is designed to support the athlete in a stable and comfortable way, even during intense efforts or longer outings.
Despite its generous coverage, the weight remains extremely low: only 28 grams. This means less pressure on the face and lasting comfort over time.
Adjustable nose pad and adjustable temples: an even more personalized fit
One of the strengths of the new LIEGI model is the ability to achieve an even more precise fit thanks to the presence of:
Adjustable nose pad
Allows the support point to be adapted to the face, improving stability, comfort, and eyewear positioning.
Adjustable temples
This is the added value of the model. They allow further fit customization, improving grip and the feeling of security during dynamic sports, vibrations, pace changes, and quick movements.
The combination of these two elements makes LIEGI particularly suitable for a wide audience, both male and female, with a unisex fit.
Types of use
Road cycling
For those riding on asphalt, LIEGI provides continuous protection from wind, bright light, dust, and insects. The DCHROM® lens automatically adapts to the changing brightness typical of road rides, especially when alternating between open stretches, short tunnels, tree-lined roads, or variable skies.
Its low weight, adjustable nose pad, and adjustable temples help keep the glasses stable and comfortable even during endurance rides or long training sessions.
Mountain bike
Off-road, protection is essential. LIEGI is ideal for MTB because its wraparound structure creates an effective barrier against branches, brush, dust, insects, and small debris.
The photochromic lens is especially useful on trails: it stays lighter in woods or shaded areas and darkens when emerging into full light, helping you read the terrain better in every situation.
Running
For road running, LIEGI helps maintain clearer, more protected vision, reducing discomfort caused by wind, dust, and strong light. It is the ideal choice for runners who train at varying times, from early morning until late afternoon, and want a single pair of glasses suited to different conditions.
Trail running
In trail running, light changes are frequent and often very rapid: woodland, clearings, open paths, pale rock, dirt tracks. In this setting, the DCHROM® lens shows its full potential, adapting automatically and delivering more balanced vision at all times.
The wraparound structure also protects against branches, dirt, and insects, while the adjustable nose pad and temples improve stability even on the most technical sections.
Mountains and hiking
During trekking and hikes, light can change constantly: forest trails, exposed ridgelines, reflective rocks, variable weather conditions. LIEGI adapts naturally to these scenarios, providing protection, comfort, and dynamically managed vision throughout the route.
Prescription technology: internal optical clip for corrective lenses
LIEGI is designed for people who need vision correction during sports activity. It comes with a practical optical insert, designed to hold corrective lenses and allow the athlete to benefit from both the outer sports protection and their own optical correction at the same time.
The optical clip supports:
- Maximum sphere: -5.00 / +4.00
- Cylinder (astigmatism): +/- 1.00
It also supports:
- bifocal lenses
- progressive lenses
This makes LIEGI an extremely attractive solution for anyone looking for versatile, technical, and practical prescription sports eyewear for many outdoor disciplines.
Optical clip dimensions
- Lens height: 40 mm
- Lens width: 45 mm
- Lens base: 6
Corrective lenses must be made by your optician based on your personal prescription.
Materials and construction
TR90 Ultralight frame
The LIEGI frame is made from TR90 Ultralight, a technical material highly appreciated in the sports world for its lightness, flexibility, and durability.
This allows the glasses to offer long-lasting comfort, excellent adaptability, and a consistently lightweight feel even during intensive use.
Highly versatile sports lens
The DCHROM® category 0–3 photochromic lens is designed for those who want a single solution capable of accompanying them in different light conditions without compromising on protection or visibility.
Model dimensions
The dimensions of the LIEGI model are:
- Width: 145 mm
- Height: 59 mm
- Temple length: 125 mm
- Lens base: 8
- Fit: Unisex (men and women)
Included
LIEGI comes with a complete set, designed to provide practicality and protection from the very first use:
- optical insert
- hard case
- microfiber pouch
Technical features
- UV protection: UV400 – maximum UVA and UVB protection
- Frame material: TR90 Ultralight
- Weight: 28 grams
- Lens type: DCHROM® category 0–3 photochromic lenses
- Other: Adjustable nose pad, adjustable temples
- Included: Optical insert, hard case, microfiber pouch
- Sports: Road cycling, Mountain Bike, Running, Trail Running, Mountain sports, Hiking
- Fit: Unisex
- Dimensions: 145 mm x 59 mm – temple 125 mm – lens base 8
- Optical clip dimensions: 40 mm x 45 mm – lens base 6
- Optical support: Sphere max -5.00/+4.00 – Cylinder +/- 1.00
- Compatibility: Also supports bifocal and progressive lenses
LIEGI: performance, protection, and tailored comfort
With LIEGI, DEMON offers advanced prescription sports glasses designed for those who want to tackle training sessions, rides, and outdoor activities with a single product capable of delivering protection, lightness, adaptability, and visual quality.
The DCHROM® photochromic lens, wraparound construction, internal optical clip, and the presence of both an adjustable nose pad and adjustable temples make this model a complete technical solution, perfect for anyone seeking reliable, modern eyewear ready to accompany them in every lighting condition.