The inside of the temple is the only part of a frame that cannot lie to you.
Most people who buy sunglasses never flip them over. They try them on, check the mirror, check the price, and make a decision based on how the frame looks from the front. The inside of the temple — the narrow strip of material that rests against your head — goes unread. This is a mistake, because it is the most informative surface on the entire frame.
Trade regulations require specific information to appear on the frame. The country of origin must be marked. The CE marking, where applicable, must be present. The manufacturer or brand responsible for the product must be identified. These are not optional. They are legal requirements. And because they are required, they tend to be honest — or at least more honest than the product page, the advertising, or the retail display.
A frame that says "Made in Italy" on the temple was assembled in Italy. A frame that says "Made in China" on the temple was assembled in China. A frame that says neither is telling you something by its silence. These markings are small and discreet by design, placed where only the owner sees them, and most brands would prefer you never looked. The ones that want you to look are usually the ones with something worth reading.
There is also information that the temple does not carry but should. The origin of the acetate is almost never marked. The lens material is rarely specified. The name of the workshop or atelier where the frame was finished is virtually never disclosed. These omissions are legal — nobody is required to share them — but they create space for ambiguity. A brand can say "Italian acetate" on its website while sourcing sheets from three different countries. A brand can say "handcrafted" without specifying by whom or where. The temple cannot hold every truth, but it holds the ones the law insists on, and that makes it the most reliable surface on the frame.
When we designed the Carrovi temple layout, we chose to put two things on it: the brand name on one side and the origin on the other. One temple reads C A R R O V I. The other reads Fatto a Mano in Italia. Between them, the CE marking sits where regulation requires it. There is nothing on the outside of the frame — no logo, no wordmark, no symbol. The exterior belongs to the shape, the acetate, and the person wearing it. The interior belongs to the facts.
Next time you pick up a pair of sunglasses — yours or someone else's — open the temple and read what is written there. It will tell you more about the frame in four seconds than the entire product page did in four minutes.