The Vertex glasses are built for performance with a rectangular frame made from premium engineered polymer and a fixed nose ridge for all-day stability, featuring durable nylon material, sturdy multi-barrel hinges, GUNNAR patented lens technology that blocks harmful blue light and 100% UV, dual-sided anti-reflective G-shield™ lens coating, and compatibility with Low Bridge Fit, with a prescription range of -5 to +6; specifications include lens width of 55 mm, lens height of 33 mm, nose width of 16 mm, frame width of 134 mm, temple length of 133 mm, and a weight of 22 grams (without packaging), and the purchase includes a microfiber pouch and a 12-month warranty.