What characteristic is common to both comfort bridges and strap bridges?

Comfort bridges and strap bridges both share the characteristic of nasal fitting, which is essential for their application in eyewear. The nasal fitting refers to how the bridge of the eyewear sits on the nose, providing stability and comfort to the wearer.

In comfort bridges, the design often incorporates padding and ergonomic shapes that conform closely to the contours of the nose, enhancing comfort during extended wear. Strap bridges, on the other hand, may utilize an adjustable or flexible design to ensure a secure and comfortable fit on various nose shapes and sizes.

This focus on how both types of bridges rest on the nasal area contributes significantly to overall user experience, reducing pressure points that could lead to discomfort, therefore making this feature particularly important when selecting eyewear for optimal fit and comfort.

The other characteristics, such as translucency, flexibility, and metal composition, do not typically unify both comfort and strap bridges, making nasal fitting the standout commonality between them.