Blackfin ST. John Optical Frame combines ultralight titanium construction with a vintage round-pantos silhouette, ideal for everyday wear that prioritizes comfort and precise fit. Key attributes: Gray | Antique dark blue | Titanium | Hypoallergenic | Ultralight | Durable | Biocompatible | Nickel-free | Ultraflexible beta titanium temples | Shortenable temples with patented tips | Includes hard case and microfiber pouch | Round pantos shape | Antiqued handmade coloring | Laser-engraved markings and serial number | Dimensions & fit: Lens/Bridge/Temple: 51 / 19 / 145 mm | Composition & care: Titanium | Beta titanium