Oakley Hydra Sunglasses combine a semi-rimless shield design with Prizm lens technology to enhance color and contrast for active use. The model is engineered for a balanced, secure fit during all-day wear. Key attributes: Black | Nero | BiO-Matter | Prizm lens technology (enhances color and contrast) | UV protection | Three-point fit | Tuned flex for balanced fit and comfort | Semi-rimless shield lens | Razor Blade-inspired trigger stem | Oakley B1B logo on temples | Dimensions & fit: Size: XS (122 mm) | One size fits all | Wide fit | High bridge fit | Composition & care: BiO-Matter frame | Prizm lens | Clean lenses with mild soap and water; dry with a soft, lint-free cloth. Store in a protective case when not in use.