Tom Ford Blue Block Navigator Optical pairs an ultra-slim navigator frame with blue-block lenses for everyday screen protection and prescription compatibility. Key attributes: Black | Nero lucido | Acetate | Blue-block lenses | Removable demo lenses (prescription-compatible) | Full-rim frame | Navigator shape | Ultra-slim acetate frame | Shiny metal T logo detail | Dimensions & fit: Lens width: 57 mm | Bridge: 13 mm | Temple length: 140 mm | Composition & care: Acetate