These sunglasses pair timeless lines with lightweight, bio-based frames and spring hinges that flex at the temples for a comfortably snug, stay-put fit whether you're on the water or on the move.Lenses: ChromaPop lenses enhance contrast and natural color for vivid detail; polarized ChromaPop Glass delivers glare-cutting clarity with elevated scratch resistance; optional ChromaPop Glass Polarchromic adapts tint to changing light; smudge- and moisture-resistant plus anti-reflective coatings help keep vision crisp.Frame: Evolve bio-based construction is lightweight and durable; medium–large fit with medium coverage; 6-base curvature offers a modest wrap; Megol nose and temple pads provide a non-slip grip; spring hinges self-adjust for all-day comfort.Additional features: Hard case included with glass lens options; microfiber bag.61mm lens width; 14mm bridge width; 140mm temple length Polycarbonate Made in the USA