Blackfin Knightsbridge Optical Frame pairs milled titanium construction with ultraflexible temples for an exceptionally lightweight, comfortable fit suited to daily wear and prescription lenses. Key attributes: Green | Army Dark Green | Titanium | Ultralight | Hypoallergenic | Biocompatible and nickel-free | Durable | Ultraflexible beta titanium temples | Shortenable temples with patented temple tips | Includes hard case and soft microfiber pouch | Squared frame silhouette | Front milled from a single titanium block | Hand-finished coloring | Dimensions & fit: Lens width: 54 mm | Bridge: 19 mm | Temple length: 160 mm | Weight: 22.8 g | Standard fit | Composition & care: Titanium (frame) | Beta titanium (temples) | Rinse with lukewarm water before cleaning. Wipe lenses and frame with a soft microfiber cloth. Store in the supplied case when not in use. Avoid exposure to high heat and harsh chemicals.