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Bolle STKS 420 Glasses - Crystal/Smoke
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Bolle STKS 420 Glasses - Crystal/Smoke
Tactical glasses designed for individuals operating in challenging field conditions where both effective eye protection and wearing comfort are crucial. Thanks to their solid construction and high-quality lenses with CAT.3 filter, they effectively protect against intense sunlight, minimise glare, and improve vision contrast.
The model is resistant to fragments, ricochets, and other flying objects in accordance with class F (objects weighing 0.86 g moving at a speed of 45 m/s).
polycarbonate visors with Platinum coating
Smoke coloured lenses with a thickness of 2.2 mm are made of polycarbonate, combining light weight with high resistance to mechanical damage. The Platinum coating on the lens surface increases scratch resistance and effectively reduces fogging, supporting good visibility in various field and weather conditions.
contoured frames, side shields
The model is equipped with a full frame made of recycled polycarbonate. Thanks to modern manufacturing processes, a construction was achieved that combines light weight with appropriate rigidity and resistance to mechanical damage.
Side shields protect the eyes from small particles, dust, and other contaminants, increasing the level of protection in harsh environments. Ergonomically contoured temples provide a stable and comfortable fit to the face, reducing the risk of displacement during activities and enhancing wearing comfort.
standards and certifications
- EN 166 - a European standard outlining optical and mechanical requirements for glasses and goggles. Optical requirements include light transmission and diffusion, refractive properties, resistance to heat, UV radiation, corrosion, and ignition. Mechanical protection means impact resistance, with four levels distinguished by letters: S, F, B, and A, where S is the lowest level of protection and A the highest.
- EN172 - a standard defining markings and transmission coefficients as well as test methods for sun protection filters against glare.
- CE - marking indicating that the product meets the EU standards and regulations in terms of safety, health, and environmental protection. The CE marking indicates product compliance with the relevant European Union directives.
main features
- lenses made of durable and lightweight polycarbonate
- Platinum coating on visors
- full frame made of recycled polycarbonate
- light, yet durable construction
- class F mechanical resistance
- ergonomically contoured temples
- side shields
MILITARY is the official distributor of Bolle.
The Bollé brand originates from Oyonnax, France, where it started its production in 1888, eventually gaining international recognition as a manufacturer of high-quality optical and protective equipment. Over 130 years of history is a period of intense development, during which the company has transformed from a local workshop into a modern industry leader. Its commitment to innovation and precision has made Bollé synonymous with quality in both the world of sport and professional environments where reliability and safety are key.
| 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.
