Etnia Barcelona ULTRA LIGHT 13 Eyeglasses Bottega Veneta while gradient lenses provide smooth

while gradient lenses provide smooth transitions from darker tints at the top to lighter shades below—ideal for driving or outdoor activities where you need both sun protection and clear downward vision

The Boomtown frame is made from Smith's Evolve material—a bio-based polymer that's over 53% derived from renewable castor plants

One retired optician noted the frames are "very light weight" with "titanium" construction

The temples feature an intricate geometric cutout pattern—visible in the photos—that adds a jewelry-like detail without extra weight

The rectangle shape offers a generous lens area that works well with progressive lenses

Etnia Barcelona ULTRA LIGHT 13 Eyeglasses Bottega Veneta while gradient lenses provide smooth