Product description
Glasses for BDC and MTB with Photochromic Mirrored Lens DCHROM® Model SPEED VENT
SPEED VENT is a pair of glasses designed for road cycling and mountain biking, featuring a new photochromic mirrored lens by DEMON. These glasses are ideal for cyclists seeking both a photochromic lens and a strong aesthetic impact, making them suitable for use in various lighting and weather conditions throughout the year, thanks to the latest generation of photochromic lenses that darken as they reflect light.

The unique feature of this special lens is its initial very light tint, allowing athletes to use SPEED VENT in low-light conditions or when returning after sunset, providing basic protection for the eyes against the air.
As shown in the accompanying image, the lens is versatile, performing well in all light conditions, especially in critical low-light situations (e.g., very cloudy or rainy weather and post-sunset rides), as well as in bright conditions.
Types of Sports:
Mountain Biking: SPEED VENT is ideal for mountain biking, suitable for both amateurs and professionals. The wide frame offers maximum protection from leaves, branches, dirt, insects, and other potential hazards. Despite its large size, the glasses weigh only 30 grams. The DCHROM® lens starts with a light tint and darkens to category 3, reflecting shades of red, purple, or blue (depending on the version chosen). It adapts to changing light conditions and is unbreakable, ensuring safety even in strong impacts. The glasses also feature an adjustable nose pad and non-slip rubberized components for stability during jumps and vibrations.

Racing Bike: SPEED VENT is excellent for road cycling. The wide shape protects the eyes from air, dust, insects, and other hazards. The lens adapts to changes in street lighting, making it suitable for very bright conditions and prolonged use. The frame is ultra-light, elastic, and features hypoallergenic rubberized parts along with an adjustable nose pad, ensuring optimal comfort.
Cyclocross, Cycle Touring, and Other Disciplines: SPEED VENT is recommended for all two-wheeled disciplines, providing maximum eye protection, stability, and comfort for cyclists seeking lightweight and protective glasses with an aggressive aesthetic.
Regardless of the discipline, SPEED VENT combines a photochromic lens with a mirrored aesthetic, offering strong visual appeal without compromising lens technology. It is important to note that the mirrored color does not alter external vision, as the internal lens is smoke-colored.

Technical Characteristics and Materials:
The new DCHROM® photochromic lenses darken when exposed to UV radiation or sunlight and gradually return to their transparent state when the light source is removed. Made from high-quality polycarbonate, these lenses are significantly lighter than conventional materials and ensure safety by not producing harmful fragments upon impact. These filters also provide protection from UV rays, offering both safety and comfort.
The DCHROM® lenses start with a light tint and reach category 3 under maximum exposure. They offer a quick light-dark transition and provide a notable sense of eye relaxation, even on bright, long-lasting sunny days.

The ultra-light frame is made of TR90, a composite of carbon fiber and nylon, ensuring that the glasses weigh only 30 grams. The frame is elastic, adapting to the head for maximum comfort and stability.
The adjustable nose pads and rubberized components are crafted from soft, hypoallergenic Megol, providing optimal stability and preventing slippage caused by vibrations and head movements.
SPEED VENT is a must-have for those seeking ultralight, photochromic mirrored cycling glasses for road racing and mountain biking on dirt roads and in mountainous terrains. This material makes the DCHROM® cycling glasses 20% lighter than conventional materials, more resistant to impacts, and more durable over time.
Measurements of SPEED VENT Glasses:
- Width: 145mm
- Height: 55mm
- Rod Length: 125mm
- Lens Base: 8
All products are shipped in their original packaging. For some models, the color or shape of the case may differ from what is shown.