Blackfin Aero Loop B2-P1 is a rimless optical frame by Blackfin, engineered from aerospace-grade titanium for an ultra-light, comfortable fit ideal for everyday wear. Key attributes: Army Dark Green | Matte Titanium | Titanium | Ultra-lightweight | Hypoallergenic | Durable | Biocompatible | Nickel-free | Patented rear-mounted lens connection | Ultra-flexible titanium temples | Adjustable temple tips | Includes hard case and microfiber pouch | Rimless design | Rectangular lenses | Minimalist invisible profile | Forged single-block front | Dimensions & fit: Size: 0 | Bridge: B4 | Temple length: 150 | Weight: 3.4 g | Adaptable fit with ultra-flexible temples | Composition & care: Titanium | Clean lenses with a soft microfiber cloth; store in the provided hard case.