# Julbo Fury Kilian Jornet Spectron > Julbo Fury Kilian Jornet Spectron are durable multi-sport sunglasses for running, cycling and everyday wear. The Spectron 3 lens (category 3, 12 % light transmission) has a fixed tint – unlike the photochromic REACTIV models it doesn't change its darkening level, but delivers the same shielding from bright sun every time. A silver flash coating complements the graphite-grey polycarbonate lens, the frame is made of bio-based Rilsan, and the model belongs to the Kilian Jornet line. > *(source: [ralpu.sk](https://ralpu.sk/en-eu/products/julbo-fury-kilian-jornet-spectron))* --- ## Product Details - **Weight:** 25 g - **Lens:** Spectron 3, fixed tint (not photochromic) - **Category:** 3 (fixed, for bright sun) - **Light transmission (VLT):** 12 % - **UV protection:** 100 % UVA and UVB - **Lens material:** polycarbonate (impact-resistant) - **Tint through the lens (from inside):** graphite grey - **Outer surface colour (from outside):** silver - **Frame:** bio-based Rilsan (from the castor bean) - **Frame colour:** Dark Brown / Light Brown (matte) - **Brand:** Julbo, France (since 1888) - **Face size:** M (Medium) – the only size available - **Lens width:** 131 mm - **Frame width:** 135 mm - **Bridge width:** 15 mm - **Temple length:** 115 mm --- ## Spectron 3 lens Spectron is Julbo's fixed-tint (non-photochromic) technology – the lens always has the same darkening level, regardless of the light: - Category 3, 12 % light transmission – designed for bright, sunny days - Unlike the REACTIV photochromic lenses (used in the Intensity and Faster L models), the darkening level doesn't change – the shielding is always the same and predictable - Filters 100 % of UVA and UVB - The lens is polycarbonate – a light material resistant to impact and falls - The neutral grey tint keeps the colours of the scene true - A silver flash coating on the lens surface reflects some extra incoming light **Difference from the REACTIV models**: Fury suits stable light conditions (bright sun), while the photochromic models (Intensity, Faster L) are better where the light changes during activity. --- ## Lens colour – view from inside vs. look from outside | Property | Colour | Description | |---|---|---| | **Tint through the lens** (what the wearer sees) | graphite grey | The neutral inner tone of the lens, which keeps the colour of the scene true. | | **Outer surface colour** (what others see) | silver | The silver flash coating visible from outside, most pronounced in direct sun. | This combination is tied to the **Dark Brown / Light Brown (matte)** frame variant. --- ## Fit, durability and comfort - **Grip Tech temples with the Air Link system** – spread the pressure, so the glasses don't dig in behind your ears even after hours of wear - **Non-slip nose pad** – keeps the glasses in place through sweat and movement - **Wrap shape** – protects your eyes from the side against sun, wind and dust - **Full ventilation** – limits lens fogging - **Panoramic lens** – wide field of vision - **Impact resistance** – the polycarbonate lens and sturdy frame stand up to falls, sweat and everyday carry in a pack or pocket --- ## Material and origin - Frame made of **Rilsan**, a bio-based plastic produced from the castor bean rather than oil - **Julbo** is a French brand founded in 1888 in the Jura mountains - The polycarbonate lens is impact-resistant, fine for everyday carry in a pack or pocket --- ## Kilian Jornet Fury belongs to the Kilian Jornet line – his logo sits on both the lens and the frame. The model is part of Julbo's wider range of multi-sport and everyday sunglasses associated with Kilian Jornet, which also includes the photochromic Intensity and Faster L models. --- ## Who they're for **Type of user:** - Runners and trail runners - Cyclists - People after multi-sport sunglasses for everyday wear **What you do:** - Training and racing in stable, bright light conditions - Everyday wear around town and on holiday - Activities where you need durable glasses that survive a fall or knock **Why Fury Kilian Jornet Spectron:** - The fixed category 3 lens delivers the same predictable shielding from bright sun every time - Durable polycarbonate and a sturdy frame stand up to everyday and rougher handling - Grip Tech temples with the Air Link system sit comfortably even over long wear - A lower price than the photochromic REACTIV models in the Kilian Jornet line --- ## Size and fit Julbo Fury is made in size **M (Medium)** only, built for an average-width adult face: - The 135 mm frame width should roughly match the width of your face from temple to temple - If regular adult sunglasses fit you well, this model will fit too - The 131 mm lens width, 15 mm bridge width and 115 mm temple length are extra measurements for comparison with your existing glasses - No other size is available – for a distinctly narrow or wide face the fit may be less precise --- ## Technical specification | Parameter | Specification | |-----------|--------------| | **Lens technology** | Spectron (fixed tint) | | **Lens type** | Spectron 3 | | **Category** | 3 (fixed, for bright sun) | | **Light transmission (VLT)** | 12 % | | **UV protection** | 100 % UVA and UVB | | **Lens material** | polycarbonate (impact-resistant) | | **Tint through the lens** | graphite grey | | **Outer surface colour** | silver | | **Frame material** | bio-based Rilsan (from the castor bean) | | **Frame colour** | Dark Brown / Light Brown (matte) | | **Brand** | Julbo, France (since 1888) | | **Weight** | 25 g | | **Face size** | M (Medium) | | **Lens width** | 131 mm | | **Frame width** | 135 mm | | **Bridge width** | 15 mm | | **Temple length** | 115 mm | | **Temples** | Grip Tech with the Air Link system, non-slip inserts | | **Nose pad** | non-slip grip nose pad | | **Ventilation** | full anti-fog ventilation | | **Field of view** | panoramic lens, wrap shape | --- ## Suitable activities - Running and trail running - Cycling - Multi-sport - Everyday wear in the sun --- ## Key benefits 1. **Spectron 3 lens** – fixed category 3, 12 % light transmission, the same predictable shielding every time 2. **Durable polycarbonate** – takes knocks and falls 3. **Silver flash coating** – reflects some extra light 4. **Grip Tech temples with the Air Link system** – less pressure on your ears, even over long wear 5. **Bio-based Rilsan frame** – part of the construction from a renewable source 6. **100 % UV protection** – filters both UVA and UVB 7. **Multi-sport and everyday wear** – one pair for town and for training 8. **From the Kilian Jornet line** – logo on both the lens and the frame 9. **A lower price** than the photochromic REACTIV models in the same line --- ## Who they're NOT for - People after a lens that adapts to changing light – that's what the photochromic Intensity and Faster L (REACTIV) models are for, not Fury with its fixed Spectron lens - Activities with strongly changing light (rapid transitions between forest and open terrain) – a fixed category 3 lens isn't as versatile there as a photochromic one - People with a face distinctly narrower or wider than size M (135 mm frame width) – the product isn't made in another size --- **Version generated:** 2026-07-02 12:00 UTC