Sunglasses for square faces

Either can work as a styling choice. Rounded edges introduce contrast, while a straighter upper rim repeats angular lines. Compare frame thickness too: a fine or transparent rim is less visually prominent than a bold opaque front of the same shape.

No. You can repeat angular lines or contrast them with curves according to your style. Check width, bridge and support before rejecting a shape; comfort does not depend on whether the frame's name matches your face shape.

The bridge should sit without slipping or pressure, and the temples should stay stable without squeezing your head. Smile and turn your head to check that the frame remains in place.

No. Polarisation, photochromic technology and mirrored finishes describe different properties. Check the particular colour's product page rather than extending one model's features to the collection.

Rinse off dust and sand first and follow the manufacturer's instructions. Use clean microfibre; do not rub dry lenses with clothing.

Look at the relationship between height and width: oval shapes tend to extend more in one direction. Some designs sit between the two, so compare outlines and dimensions.