Bolle STKS 420 Glasses - Crystal/Smoke
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Bolle STKS 420 Glasses - Crystal/Smoke
Engineered for professionals working in challenging field environments, where both reliable eye protection and wearing comfort are essential. Thanks to robust construction and premium-grade lenses equipped with a CAT.3 filter, these glasses deliver effective defense against strong sunlight, minimizing glare and enhancing contrast for improved visibility.
The eyewear meets class F standards, offering protection from fragments, ricochets, and various projectiles weighing 0.86 g and traveling at speeds up to 45 m/s.
Polycarbonate visors with Platinum coating
Constructed from polycarbonate, lenses in Smoke color with a thickness of 2.2 mm offer an optimal combination of lightweight design and exceptional resistance to mechanical impacts. A Platinum coating on their surface boosts scratch resistance and significantly limits fogging. The coating ensures good visibility in diverse terrain and weather situations.
Shaped frames, side shields
The model features a full frame constructed from recycled polycarbonate. Advanced manufacturing techniques deliver a build that merges light weight with optimal rigidity and resistance to mechanical impacts.
Side shields guard the eyes against fine debris, dust, and other airborne threats, elevating protective capabilities in challenging conditions. Ergonomically contoured temples provide a secure and comfortable fit against the face, minimizing the possibility of slippage during movement while enhancing overall wearing comfort.
Standards and certifications
- EN 166 – European standard specifying optical and mechanical protection requirements for eyewear and goggles. Optical standards cover aspects such as light transmission and diffusion, refractive accuracy, resistance to heat, UV rays, corrosion, and ignition. Mechanical protection relates to impact resistance from flying objects, graded into four categories identified by the letters S, F, B, and A, where S represents the minimal protection and A the maximum level.
- EN 172 – Standard detailing requirements for markings, transmission coefficients, and testing procedures for sun filters designed to shield against solar glare.
- CE – Certification indicating conformity with EU requirements regarding health, safety, and environmental protection. The CE marking confirms the manufacturer's declaration that their product adheres to all applicable European Union standards and directives.
main features
- Polycarbonate lenses provide exceptional durability while maintaining a lightweight profile.
- Advanced platinum-coated visors for enhanced protection and longevity.
- Full frame constructed from recycled polycarbonate, combining sustainability with strength.
- Lightweight design paired with robust durability for demanding conditions.
- Rated to mechanical resistance class F for trusted protection.
- Ergonomically contoured temples ensure a secure and comfortable fit.
- Integrated side shields for added lateral protection.
Militaria.pl is the official distributor of Bolle.
Bolle is a French brand with over 130 years of history, specializing in the production of sunglasses, ski goggles, safety glasses, and sports helmets. Founded in 1888 in Oyonnax, the company has focused on innovation and precision from the very beginning. It is known for its advanced technologies, such as photochromic lenses, Platinum anti-fog coatings and solutions that enhance contrast. The brand's products meet stringent safety standards, including EN166, ANSI and MIL-PRF, making them the choice for both athletes and uniformed services.
| Lens material | Polycarbonate |
|---|---|
| Frame material | Polycarbonate |
| Frame color | Transparent |
| Lens color | Gray |
| Mechanical resistance class | F |
| Polarized | No |
| UV filter | Yes |
| Dimness | Yes |
| Case included in set | No |
| Weight | 28 g |
| Gender | Men's |
| Main color | Smoke Grey |
| EAN | 3660740025038 |
| Manufacturer code | STK42N21E |
| Brand | Bolle |
| EAN |
Platinum coating protects the lenses from scratches, dirt and chemical exposure. It ensures high lens durability and clarity of vision.
EN166 is a European standard for optical requirements and mechanical protection for glasses and goggles. Optical requirements include light transmission and diffusion, refractive properties, heat and UV resistance, corrosion and ignition. Mechanical protection is the resistance to object impact, within which there are 4 levels designated by the letters S, F, B and A, where S is the least protection and A is the highest.
EN172 European standard specifying markings and transmittance and corresponding test methods for sunscreens that protect against solar glare.
