Square

Square frames flatter round and oval faces best — they add angular contrast and structure to softer features. They also work for heart-shaped faces by widening the upper face visually. Square frames work less well on naturally square or rectangular faces, where matching the existing angles can read as too harsh; for square faces, lean toward round or aviator frames instead.

Not when the frame is sized correctly. The "aggressive square sunglasses" association comes from oversized novelty frames; a well-proportioned square in a daily-wear width (138-145mm) reads as polished and modern, not loud. The Italian acetate construction softens the edges visually compared to cheaper injection-molded plastics. For a more subtle version, choose a slightly soft-edged "rounded square" frame.

Quince sunglasses use Italian acetate frames — a plant-based plastic derived from cotton and wood pulp that holds rich color, polishes smooth, and feels warmer and lighter on the face than petroleum-based plastic. Acetate is hand-polished, hypoallergenic, and durable enough for daily wear. Hinges are stainless steel with five-barrel construction for smooth opening over years of use.

Polarized lenses are available on most Quince sunglasses styles — check each product page for the polarized variant. Polarization filters out horizontal-axis glare from water, snow, roads, and car hoods, which sharpens contrast and reduces eye fatigue. For driving, water sports, and bright-sun environments, polarized is the better choice. Non-polarized lenses are slightly less expensive and work fine for general use. All Quince lenses block 100% UVA and UVB.

Yes — all Quince sunglasses block 100% of UVA and UVB rays, the standard set by the American Optometric Association for sun protection. This holds true regardless of lens darkness; tint controls visible-light reduction (how dark the world looks), but UV blocking is a separate coating on the lens. Daily UV protection helps prevent cataracts, macular degeneration, and pterygium — the same UV protection you give your skin.

Sunglass fit is mostly about frame width — the distance across the front of the frames should match your face width (measured temple to temple). Each Quince product page lists frame width (typically 130-150mm), lens width, bridge width, and arm length. As a general rule: 130-138mm fits narrow faces, 138-145mm fits average faces, 145mm+ fits wider faces. The arms should curve gently over the ears without pinching.