Sunglasses spend far more time stored than worn. Where they sit between wears decides more about their condition after five years than anything you do while wearing them.
Hard case or soft pouch
They protect against different things, and only one of them protects against the failure that actually destroys frames.
A soft pouch keeps dust off and prevents lens contact with keys or coins. It offers no protection against compression. A pouch at the bottom of a bag under a laptop is a frame waiting to be bent.
A hard case is the only thing that survives the realistic worst case: something heavy landing on the bag. For anything that travels, this is not optional.
The sensible arrangement is both – frames in the pouch, pouch in the case. The pouch prevents rattle inside the shell and doubles as the cloth you already needed.
How to put them in
Fold the temples in the order the hinges were designed for – usually left first, then right. Forcing them the other way puts lateral load on the hinge barrels and is a slow route to play in the joint.
Set them in the case lenses facing up, convex side away from the shell. And when you take them off anywhere else – a desk, a table, a car seat – the same rule applies: folded, lenses up, never face down. It is the single highest-leverage habit in eyewear care and it costs nothing.
Places frames should not live
- The car. Cabin temperatures in summer exceed what coatings and acetate tolerate. A dashboard is the worst surface in the vehicle, and glove boxes are not much better.
- The bathroom. Repeated humidity cycles corrode base metal at any point where plating has thinned, and encourage mould in a fabric-lined case.
- A window sill. Sustained direct sun fades acetate and, over months, softens the front enough to lose its set.
- On your head. Comfortable, and it stretches the frame front wider with every wear while depositing hair product on the temples.
- Hanging from a collar. One temple carries the whole weight, twisting the frame out of alignment.
Store them dry, always
Closing a damp frame into a case creates a sealed humid environment against metal and around hinge barrels. After a beach day, a sweaty commute or rain, the frame needs to be dry before it goes away – open the temples and leave it a few minutes.
Salt is the aggressive case. Rinse the whole frame in fresh water after any beach exposure, work the temples open and closed a few times to flush the hinges, then dry. Salt left to crystallise inside a hinge is how a smooth joint becomes a gritty one.
Owning more than one pair
Frames stored loose together scratch each other. Cases stack; frames do not.
A drawer insert or tray with individual compartments works if each pair sits lenses-up in its own slot with nothing on top. Open display on a shelf looks appealing and exposes everything to dust and light continuously – fine for a rotation you wear weekly, poor for anything you use twice a year.
Keep the case each pair came with. Manufacturers size them to the frame, and a case that fits closely does more than a generous one in which the frame can move.
Putting a pair away for the season
Long storage is where neglect compounds quietly. Skin oils, sunscreen residue and salt left on a frame for six months etch surfaces in a way that six months of wearing would not.
- Clean properly first – rinse, mild soap, rinse, blot dry.
- Have the fit checked if the frame has drifted. Storing a misaligned frame sets the misalignment.
- Dry completely, then case it, lenses up.
- Choose somewhere with a stable temperature – a wardrobe or drawer, not a loft, garage or car.
The case itself needs attention
A case lining collects the grit that comes off the frame, and then holds it against the lenses. Turn the case out occasionally and wipe the interior. If the lining has hardened, matted or picked up sand, replace it – a five-pound case protects a frame worth several hundred, and a gritty one actively damages it.
Storage is unglamorous and it is most of the job. A hard case, lenses up, dry, out of the car – four habits, and frames simply stop wearing out at the rate they otherwise would.