A small rectangular metal frame can weaken the fullness effect of a round face. Avoid choosing a slightly rounded style, as it will make the originally round cheeks appear more rounded.

Not suitable for overly bright yellow or red lenses, or sunglasses with slender and soft frame lines, which will set off the face even larger

Square face - The length of the frame is the key to selection. It is recommended to choose a frame length that is slightly wider than the face shape. Long flat square or long circle glass mens with curved corners will soften the edges of the face shape. You may choose some sunglasses with exaggerated width and avant-garde style to highlight your personality. The colors of the lenses are stable round tortoise shell glasses, classic black, and brown.

It is unsuitable for square frames with a ruler that is too large, as it will make the face appear more square. Transparent light-colored lenses are also not suitable for square face shapes.

Long face shape - suitable for frames with thicker borders, circle glasses mens and curved mirror surfaces, slightly thicker mirror legs, or multi-angle shaped frames to reduce the slender feeling of the long face. Sports casual glasses and colored large framed sunglasses look very stylish and can enhance an overly long face shape. Using some feminine pink or burgundy colored lenses can increase the brightness of the face.

Not suitable for small or elongated square-shaped frames. A flat and elongated shape will make the face appear longer, and too calm black or brown lenses will cause the center of gravity of the long face to be misaligned, with an improper up and down ratio.