# Sport sunglasses TIFOSI RAIL XC Clarion Fototec photochromic lens, satin vapor frame, Clarion Red lens (74%–14% light transmission)

**URL:** https://aio.lv/en/product--tifosi-tfi-1820302830--12004322
**Data updated:** 2026-03-11 18:36 (EET)
**Category:** Glasses
**Manufacturer:** TIFOSI
**Manufacturer code:** TFI-1820302830
**EAN:** 848869022906
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

TIFOSI RAIL XC are sport sunglasses designed for cycling and outdoor training. They feature a Clarion Fototec photochromic Red lens that adjusts between approximately 74% and 14% light transmission for variable lighting, and a satin vapor lightweight frame for stability and comfort. The model suits riders needing single-lens coverage, UV protection and adaptable tint for changing conditions.

## Long description

TIFOSI RAIL XC sport sunglasses are engineered for cycling and outdoor training where variable light conditions and full-field vision matter. The design combines a single, wide Clarion Fototec photochromic Red lens with a satin vapor lightweight frame to provide broad coverage, impact resistance, and adjustable tint. The Clarion Fototec lens changes transmission between approximately 74% and 14% to adapt to shifting brightness, while the frame offers secure fit and comfort during high-movement activities.
Advantages
The single-lens construction gives uninterrupted peripheral vision and consistent optical performance across the field of view. Photochromic Clarion Fototec technology automatically darkens and clears to maintain appropriate contrast and visual comfort in changing light. A satin vapor frame balances low weight with structural stability, and nose and temple contact points are shaped to reduce slip during vigorous activity. The lens material provides UV protection and is selected for impact resistance suitable for sport use.
Suitable for
Cycling on roads, gravel and mountain trails
Outdoor training and interval sessions
Commuting and urban rides with variable shade and sunlight
All-day rides where changing light conditions occur
Key specifications
Lens type: Clarion Fototec photochromic Red single lens
Light transmission range: approximately 74%–14%
Frame finish and material: satin vapor, lightweight sport frame
Design: single-lens for extended peripheral coverage
Protection: UV filtering appropriate for outdoor sports
How to use
Put the sunglasses on so the frame rests comfortably on the bridge of the nose and the temples sit securely behind the ears. Allow the photochromic lens a few moments to adjust when moving between shaded and sunny areas; the Clarion Fototec coating transitions automatically based on light intensity. Clean the lens with a soft microfiber cloth and a mild lens cleaner to avoid scratches and preserve the photochromic coating. Inspect fit before high-speed activity to ensure stability and comfort.
Usage recommendations
Use these sunglasses when you need broad visual coverage and adaptable tint during cycling or outdoor workouts. Avoid prolonged storage in direct sunlight at high temperatures and clean with appropriate materials to maintain lens performance and frame condition.

## FAQ

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Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All TIFOSI products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized TIFOSI service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

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