The lightweight outdoor safety spectacle built for UK site workers and plant operators who need glare-free, fog-free vision all day without the discomfort of heavier eyewear.
- Smoke lens with EN172 5-3.1 sun glare filter
- Anti-fog and &-scratch coatings
- 25g lightweight construction
- Metal-free frameless screwless design
- Class 1 UV Protection: 2C - 1.2
- nonslip arms & clear TPE nose rest
- Supplied with recycled polyester pouch & recycled paper box
- CE/UKCA, EN166 FTKN, EN172 5-3.1 certified
- Smoke lens variant (AEYK2S); clear lens available separately (AEYK2C)
armourU K2 Smoke Lens Lightweight Safety Glasses (25g) – EN166 FTKN Anti-Glare
The lightweight outdoor safety spectacle built for UK site workers and plant operators who need glare-free, fog-free vision all day without the discomfort of heavier eyewear.
- Smoke lens with EN172 5-3.1 sun glare filter
- Anti-fog and &-scratch coatings
- 25g lightweight construction
- Metal-free frameless screwless design
- Class 1 UV Protection: 2C - 1.2
- nonslip arms & clear TPE nose rest
- Supplied with recycled polyester pouch & recycled paper box
- CE/UKCA, EN166 FTKN, EN172 5-3.1 certified
- Smoke lens variant (AEYK2S); clear lens available separately (AEYK2C)
- Buy 20 for £6.68 £5.57 each and save 11%
- Buy 50 for £6.40 £5.33 each and save 15%
| BULK DISCOUNT | 20 | 50 |
|---|---|---|
| Price | £5.57 £6.68 | £5.33 £6.40 |
The armourU K2 Smoke Lens safety spectacle is a 25g lightweight outdoor eyewear solution designed for UK construction workers, plant operators and site staff who spend extended shifts in bright sunlight or high-glare environments. The smoke polycarbonate lens carries an EN172 5-3.1 sun glare filter, reducing the intensity of outdoor light that causes squinting, eye strain and fatigue during full-day site operations.
At 25g, the K2 is significantly lighter than most tinted safety spectacles, and the metal-free frameless screwless design eliminates the pressure points that cause operatives to remove eyewear during long outdoor tasks. Anti-fog and anti-scratch coatings maintain clear vision when moving between the exterior environment and enclosed plant cabins, site offices or vehicles. The clear TPE nose rest and nonslip arms provide a stable fit during driving and active outdoor work.
Certified to EN166 FTKN and EN172 5-3.1, it meets the requirements of UK Regulation 2016/425 on PPE. Maximum product life is two years from date of manufacture. Supplied with a recycled polyester pouch made from two 1-litre plastic water bottles and a recycled paper box, it supports site sustainability reporting un
✓ Smoke lens with EN172 5-3.1 sun glare filter cuts through harsh outdoor glare without distorting site signals or instrument readings
✓ F-rated low energy impact protection at extreme temperatures confirmed under EN166 FT marking
✓ Anti-fog coating prevents condensation when moving between outdoor environments and enclosed site cabins or vehicles
✓ Anti-scratch coating extends lens service life in dusty and high-particulate outdoor environments
✓ Metal-free frameless screwless construction suits metal-detection security checkpoints and eliminates conductivity risk
✓ Nonslip arms and clear TPE nose rest maintain a stable fit during active outdoor movement and plant operation
✓ Recycled polyester pouch from two 1-litre plastic water bottles supports site-level sustainability and ThinkGreen procurement
Specifications Table – AEYK2S
| Specification | Detail |
|---|---|
| Product Name | armourU K2 Smoke Lens Lightweight Safety Glasses |
| Product Code | AEYK2S |
| Brand | armourU |
| Product Type | Safety Spectacles |
| Lens Material | Polycarbonate (PC) |
| Frame | Frameless, screwless |
| Lens Type | Panoramic, smoke |
| Lens Coating | Anti-fog, anti-scratch (both sides) |
| Optical Class | Class 1 |
| Nose Rest | Clear TPE |
| Temple Arms | Nonslip |
| Construction | Metal-free, no screws |
| Weight | 25g (approximately) |
| Sun Glare Filter | EN172 5-3.1 |
| EN166 Marking | FTKN |
| PPE Regulation | UK Regulation 2016/425 on PPE |
| Maximum Product Life | 2 years |
| Pouch | Recycled polyester (made from two 1-litre plastic water bottles) |
| Packaging | Recycled paper box |
| Clear Lens Variant | AEYK2C |
EN166 Marking Breakdown – AEYK2S
| Code | Meaning |
|---|---|
| F | Low energy impact resistance |
| T | Resistance to extreme temperatures |
| K | Resistance to surface damage by fine particles (anti-scratch) |
| N | Resistance to fogging (anti-mist) |
Suitability Guide:
The armourU K2 Smoke Lens Safety Glasses are suitable for:
- Outdoor construction site operations,
- Plant and heavy machinery operation,
- Roadworks and highways inspection,
- Delivery driving in bright conditions,
- Site management and visitor protection in sunny weather,
- Any task requiring glare reduction during extended outdoor shifts.
Application Suitability Table - AEYK2S
| Application | Suitable | Notes |
|---|---|---|
| Outdoor construction site operations | ✓ | Smoke lens reduces glare; F-rated impact confirmed |
| Plant and heavy machinery operation | ✓ | Glare reduction improves instrument and signal visibility |
| Roadworks and highways inspection | ✓ | Sun glare filter and anti-scratch for outdoor dusty conditions |
| Delivery driving in bright conditions | ✓ | Panoramic lens, lightweight for all-day driving wear |
| Site management and visitor protection | ✓ | Lightweight, comfortable for extended outdoor use |
| Humid and temperature-variable environments | ✓ | Anti-fog coating reduces condensation |
| Dusty outdoor environments | ✓ | Anti-scratch coating protects lens clarity |
| Metal-detection security environments | ✓ | Metal-free, no screws confirmed |
| High-energy impact tasks (grinding, chiselling) | X | F-rated low energy only; use B or A-rated eyewear |
| Welding or molten metal operations | X | No IR protection; manufacturer explicitly prohibits |
| UV curing environments | X | Manufacturer explicitly prohibits |
| Chemical splash requiring full facial seal | X | Spectacles do not provide a sealed perimeter |
| High-pressure fluid or chemical jet | X | Requires sealed goggle |
| Laser operations | X | No laser protection rating |
| Indoor low-light environments | X | Smoke lens reduces light transmission; use clear variant AEYK2C |
Usage Guide:
Before Use
Inspect lenses for cracks, scratches, pitting or coating damage before each use and discard any spectacle showing these defects. Scratching or pitting significantly reduces impact protection and the spectacle must be replaced immediately. Confirm the task hazard level is within scope: this is an F-rated low energy impact spectacle. For high-energy impact tasks such as grinding or chiselling, a higher-rated product is required. Do not use near welding operations, molten metal casting, UV curing environments or any source of hazardous IR or UV radiation. Do not wear over prescription frames.
During Use
The smoke lens reduces sun glare and is designed for outdoor use in bright conditions. It is not a welding or IR filter and must not be used as primary protection in environments with hazardous infrared radiation. The anti-fog coating reduces but does not eliminate condensation under extreme temperature differentials. Do not wipe lenses with abrasive materials. Check regularly for visible scratching or pitting; replace immediately if found as lens damage reduces impact protection.
After Use
Clean with soap and warm water or a soft non-abrasive cloth. Do not use solvents, abrasive cloths or paper towels. The lens is hard-coated for scratch resistance but is not scratch-proof. Store in the supplied recycled polyester pouch away from solvents, solvent vapours and corrosive materials. Store above 5°C and below 40°C at no more than 90% relative humidity. No parts are replaceable or interchangeable; if any part is deemed unfit for use, discard the entire product. Maximum product life is two years.
What does EN166 FTKN mean on a smoke lens safety spectacle?
F confirms low energy impact resistance,
T confirms protection against high-speed particles at extreme temperatures,
K confirms the anti-scratch coating
and N confirms the anti-mist coating all meet EN166 requirements.
For outdoor plant operation and construction, the FT combination is important as it confirms the spectacle maintains impact protection across temperature extremes found on UK sites, from cold winter mornings to hot plant cabin environments.
What is the EN172 5-3.1 sun glare filter and why does it matter for site work?
EN172 is the standard for sun glare filters for industrial use. The 5-3.1 designation indicates a sun glare filter with a transmission factor of 3.1, which reduces the intensity of visible light reaching the eye. For plant operators, drivers and outdoor workers in bright UK conditions, sustained exposure to glare causes eye fatigue that impairs concentration and reaction time. The smoke lens addresses this without distorting colour rendering, so site signals, instrument readings and hazard markings remain clearly distinguishable.
Can this spectacle be worn while operating plant machinery?
Yes. The panoramic lens provides a wide unobstructed field of vision essential for cabin instrument visibility and external site awareness. The 25g lightweight construction prevents the ear and nose fatigue that causes operators to remove eyewear during long machine operation shifts, and the nonslip arms maintain a stable fit during vehicle movement. The EN172 5-3.1 filter reduces glare from reflective surfaces, wet ground and direct sunlight that are common hazards during plant operation.
Is there a clear lens version available?
Yes. The clear lens variant is the armourU K2 with product code AEYK2C, suitable for indoor tasks, low-light conditions, night driving and any application where light transmission reduction from a smoke lens would be a disadvantage. The smoke lens AEYK2S is the outdoor and bright-conditions variant. Both versions share the same EN166 FTKN rating, 25g weight, metal-free frameless design and TPE nose rest.
What is the maximum service life and when should the spectacle be replaced?
The maximum product life is two years. However, the spectacle must be replaced immediately if any scratching, pitting, crazing or damage to the lens is visible, regardless of age. Lens damage significantly reduces impact protection even if the lens appears functional. No parts are replaceable or interchangeable; if any component fails, the entire product must be discarded.
What is CMT ThinkGreen and how does this product support it?
CMT ThinkGreen is CMT Group's sustainability programme aimed at reducing environmental impact across the construction supply chain. The K2 contributes directly through its recycled polyester pouch, manufactured from two 1-litre plastic water bottles, and its recycled paper box. For sites operating under ISO 14001 or clients with net-zero supply chain commitments, specifying ThinkGreen-aligned products provides measurable, reportable progress. CMT Group is on track to meet its Net-Zero 50 objectives and regularly introduces sustainable product lines to help construction operations reduce procurement footprint without compromising on certified safety standards.
Why buy tinted safety eyewear from CMT Group?
Glare-related eye fatigue is a productivity and safety issue that most site PPE programmes underestimate until operatives start removing their eyewear on the job. CMT Group's armourU eyewear range is selected specifically for the UK construction and logistics market, where outdoor glare, temperature variation and extended shift lengths are the dominant comfort challenges. With the EDGE procurement portal, H&S managers can specify the correct lens variant by site type, preventing operatives from substituting indoor clear specs for outdoor tasks and vice versa, with full spend visibility and per-site budget controls.
Founded in 2010, CMT Group is the UK's largest independent site equipment supplier. Holding BSIF Registered Safety Supplier status means every armourU product on our platform has been verified to meet genuine certified safety standards, so procurement managers can specify with confidence rather than relying on unverified product claims.
