{"product_id":"bolle-stks-420-smoke-stk42n21e","title":"Bolle STKS 420 Smoke Safety Glasses - Crystal Frame - STK42N21E","description":"\u003cstyle\u003e\u003c!--\n.stks420alive\u003e div { border: 1px solid #FFFFFF; border-radius: 5px; background-color: #FFFFFF; padding: 0em; color: #d9480f; } .stks420alive{ display: grid; grid-template-columns: repeat(7, 1fr); grid-gap: 1px; }\n--\u003e\u003c\/style\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #e60012;\"\u003e Available Versions\u003c\/span\u003e \u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"stks420alive\"\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.alive-sr.co.uk\/products\/bolle-stks-420-polarised-stk42n55e\" title=\"Cobalt Flash Polarised, Crystal Frame\"\u003e\u003cimg alt=\"Bolle STKS 420 Cobalt Flash Polarised Safety Glasses with Crystal Frame\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/STK42N55E-02_100X100.jpg?v=1776002960\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.alive-sr.co.uk\/products\/bolle-stks-420-smoke-stk42n21e\" title=\"Smoke Lens, Crystal Frame\"\u003e\u003cimg alt=\"Bolle STKS 420 Smoke Safety Glasses Crystal Frame STK42N21E\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/STK42N21E-02_100X100.jpg?v=1775760144\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.alive-sr.co.uk\/products\/bolle-stks-420-clear-safety-glasses-stk42n11e\" title=\"Clear Lens, Crystal Frame\"\u003e\u003cimg alt=\"Bolle STKS 420 Clear Safety Glasses Crystal Frame\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/STK42N11E-02_100X100.jpg?v=1775510528\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.alive-sr.co.uk\/products\/bolle-stks-420-polarised-stk42n51e\" title=\"Cobalt Flash Polarised, Black Frame\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/STK42N51E-02_S_100X100.jpg?v=1775305023\" alt=\"Bolle STKS 420 Cobalt Flash Polarised Safety Glasses\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.alive-sr.co.uk\/products\/bolle-stks-420-polarised-stk42n50e\" title=\"Polarised Lens, Black Frame\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/STK42N50E-02_S_100X100.jpg?v=1775305023\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.alive-sr.co.uk\/products\/bolle-stks-420-stk42n20e\" title=\"Smoke Lens, Black Frame\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/STK42N20E-02_S_100X100.jpg?v=1775663069\" alt=\"Bolle STKS 420 Smoke Safety Glasses\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003ca href=\"https:\/\/www.alive-sr.co.uk\/products\/bolle-stks-420-clear-safety-glasses-stk42n10e\" title=\"Clear Lens, Black Frame\"\u003e\u003cimg alt=\"Bolle STKS 420 Clear Safety Glasses Black Frame\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/STK42N10E-02_100X100.jpg?v=1775305022\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003chr\u003e\n\u003ch3\u003eSTKS 420 Safety Glasses by Bolle Safety - Smoke PC Lens - Crystal Frame - \u003cspan\u003eSTK42N21E\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eSTKS 420 Smoke Safety Glasses deliver reliable eye protection with a modern, athletic look. \u003c\/span\u003e\u003cspan\u003eBolle STKS 420 combines comfort, coverage, and sustainable design for demanding work. \u003c\/span\u003e\u003cspan\u003eEngineered by Bollé Safety, these full-frame glasses are built for site use and all-day wear. \u003c\/span\u003e\u003cspan\u003eThe streamlined profile helps them feel secure without looking bulky. \u003c\/span\u003e\u003cspan\u003eIntegrated protection supports confidence in bright outdoor conditions. \u003c\/span\u003e\u003cspan\u003eSTK42N21E is a practical choice for dependable performance and clear vision.\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSmoke (Grey) Lens - Outdoor use on-site\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTint base: Grey\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003e% Visible Light Trans: 13%\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eBlocks extreme sunlight and surface glare for maximum protection\u003c\/li\u003e\n\u003cli\u003eMaintains true color perception with a neutral grey tint\u003c\/li\u003e\n\u003cli\u003eReduces squinting and visual fatigue, even during long exposure hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe smoke lens suits bright outdoor conditions. It helps reduce glare while supporting clear, comfortable vision. These Smoke Safety Glasses are well-suited to long periods in strong daylight. The neutral grey tint keeps colour perception natural.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSustainably crafted: 32% (plano) and 52% (prescription) recycled polycarbonate\u003c\/li\u003e\n\u003cli\u003eCrystal-clear vision with PLATINUM: anti-scratch, anti-fog coating\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eEnhanced protection comfort: Integrated side shields and upper brow protection for superior coverage\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003ePrescription-ready: Advanced lens treatments and wide prescription adaptability for precise vision correction\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eSmoke Lens Crystal Frame\u003c\/li\u003e\n\u003cli\u003eFull-frame construction helps the glasses feel secure while maintaining a streamlined profile.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Info\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWeight: 28 g\u003c\/li\u003e\n\u003cli\u003eFrame Type: Full Frame\u003c\/li\u003e\n\u003cli\u003eFrame Material: Recycled Polycarbonate\u003c\/li\u003e\n\u003cli\u003eFrame Colour: Crystal\u003c\/li\u003e\n\u003cli\u003eLens Material: Polycarbonate\u003c\/li\u003e\n\u003cli\u003eLens Colour: Grey\u003c\/li\u003e\n\u003cli\u003eLens Coating: Platinum (Anti-scratch and Anti-fog KN Rated)\u003c\/li\u003e\n\u003cli\u003eStandards: \u003cspan\u003eEN166 - EN172\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003eLens marking: GL3 CT 1 CE\u003c\/li\u003e\n\u003cli\u003eFrame Marking: \u003cspan\u003eEN166\u003c\/span\u003e FT CE UKCA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor fit and product reference, check the documentation below. It includes the datasheet and size guide for STKS.\u003c\/p\u003e\n\u003cp\u003eReview the guides before purchase if you need sizing support. They also help with technical confirmation and prescription suitability details.\u003c\/p\u003e\n\u003cp\u003eFor everyday care, store the glasses carefully and keep the lenses clean. This helps maintain comfort, visibility, and coating performance.\u003c\/p\u003e\n\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eDocumentation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/STKS420-INDUSTRIAL-FT-EMEA_EN.pdf?v=1775305042\"\u003e\u003cstrong\u003eProducts Datasheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/SKTS_420_Size_2.jpg?v=1775648013\"\u003e\u003cstrong\u003eSize Guide\u003c\/strong\u003e\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Bolle Safety","offers":[{"title":"Default Title","offer_id":56781877903738,"sku":"BL-STK42N21E","price":15.95,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0054\/5826\/4182\/files\/STK42N21E-02.jpg?v=1775760144","url":"https:\/\/www.alive-sr.co.uk\/products\/bolle-stks-420-smoke-stk42n21e","provider":"Alive Safety and Rescue Limited","version":"1.0","type":"link"}