Oakley Bisphaera Speed Sunglasses combine a sport-focused twin-lens silhouette with Prizm lens technology to boost color and contrast for outdoor performance and everyday wear. Key attributes: Gray | Grey | O-Matter | Prizm lenses enhance color and contrast | 100% UV protection (UV400) | Impact-resistant lenses | Lightweight, durable frame for extended wear | Unobtainium nosepad and earsocks for a secure, non-slip fit | Non-slip temple tips | Compatible with Oakley authentic prescription lenses | Anti-smudge and hydrophobic lens coatings | Twin-lens sport design | Semi-rim rectangular silhouette | Aerodynamic, sport-ready edge | Dimensions & fit: Lens size: 68 mm | Bridge: 6 mm | Temple length: 136 mm | Regular fit | High bridge fit | Composition & care: O-Matter frame | Polycarbonate lenses | Unobtainium nosepad and earsocks | Clean lenses with a microfiber or Oakley Micro Bag and mild soap; avoid solvents, alcohol or abrasive materials. Store in a protective case and avoid prolonged exposure to high heat.