{"product_id":"rockbros-photochromic-cycling-glasses-28g-ultra-light-tr90-frame-with-uv-protection-and-prescription-insert","title":"ROCKBROS Photochromic Cycling Glasses 28g Ultra-Light TR90 Frame with UV Protection and Prescription Insert","description":"\u003cp\u003e\u003cstrong\u003eThese ROCKBROS photochromic cycling glasses are ultra-light (28g) sports sunglasses with adaptive lenses that darken in bright light and block UV to protect your eyes during rides.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for cyclists, runners and active commuters, these glasses combine near-weightless comfort with lenses that automatically adjust tint based on sunlight. The TR90 frame gives resilience and flexibility, while the adjustable rubber nose pad and raised grip dots keep the glasses stable when you sweat. A removable myopia insert lets riders who wear prescription lenses use the glasses without sacrificing clarity.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these glasses respond to changing light?\u003c\/h3\u003e\n\u003cp\u003eThe photochromic lenses react to UV intensity: they are clearer in low light and darken as sunlight increases, reducing glare without swapping lenses. This makes them useful for rides that move through shaded areas, tunnels or varying weather.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatically shifts from light to deep gray with stronger UV exposure\u003c\/li\u003e\n  \u003cli\u003eReduces glare for safer vision in bright conditions\u003c\/li\u003e\n  \u003cli\u003eGood for mixed-light routes and unpredictable weather\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill they stay comfortable and secure on long rides?\u003c\/h3\u003e\n\u003cp\u003eAt just 28 grams, the frame is engineered to minimize pressure on your nose and temples so you can wear them for hours. The adjustable rubber nose pad plus raised-dot grip zones on the frame provide a custom fit and help keep the glasses from slipping when you sweat.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eExtremely lightweight design reduces pressure points\u003c\/li\u003e\n  \u003cli\u003eAdjustable nose pad customizes fit for different face shapes\u003c\/li\u003e\n  \u003cli\u003eRaised grip dots help maintain stability during vigorous activity\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these glasses durable and travel-ready?\u003c\/h3\u003e\n\u003cp\u003eThe TR90 material used for the frame offers a balance of flexibility and toughness, standing up to knocks and regular use without deforming. Their compact, resilient construction makes them a practical choice for frequent riders who need gear that packs and performs reliably.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eTR90 frame resists breakage and retains shape under stress\u003c\/li\u003e\n  \u003cli\u003eFlexible material tolerates bending and impacts\u003c\/li\u003e\n  \u003cli\u003eLightweight build reduces bulk in a jersey pocket or pack\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan people who wear prescription lenses use these?\u003c\/h3\u003e\n\u003cp\u003eYes — ROCKBROS includes a myopia-friendly insert that attaches to the nose pad so you can add prescription lenses for clear vision while riding. The insert is easy to mount and remove, making it simple to switch between prescription and plano use.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eCompatible myopia frame included for prescription lens inserts\u003c\/li\u003e\n  \u003cli\u003eQuick attachment to the adjustable nose pad for stability\u003c\/li\u003e\n  \u003cli\u003eAllows clear, corrective vision without sacrificing sports fit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? These ROCKBROS photochromic cycling glasses suit cyclists, road and gravel riders, trail runners, and active commuters who want adaptive sun protection without bulk. They’re especially useful for anyone seeking a lightweight, durable pair that stays put during intense activity and accommodates prescription lens users.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: How quickly do the lenses change tint?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The photochromic lenses darken within minutes of increased UV exposure and lighten again when UV decreases, adapting as you move between sun and shade.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I replace the lenses with prescription ones?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You can use the included myopia insert to add prescription lenses; it attaches to the nose pad for a stable corrective solution.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"ROCKBROS","offers":[{"title":"Default Title","offer_id":59354126451036,"sku":"B0CRR9YG7C","price":45.86,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1059\/5604\/9244\/files\/rockbros-front-profile-glasses.jpg?v=1791147058","url":"https:\/\/sportium.co.uk\/products\/rockbros-photochromic-cycling-glasses-28g-ultra-light-tr90-frame-with-uv-protection-and-prescription-insert","provider":"Sportium Sports And Outdoors","version":"1.0","type":"link"}