01 · FRONT WEIGHT
A larger front can place more load toward the front of the face
Large lenses and a substantial frame can increase front weight and move the centre of mass forward.
If the bridge does not support that load well, the sunglasses slide down. Tightening the temples alone can create a different pressure problem.
Oversized sunglasses often increase both lens area and frame material, which can increase front mass. The more important issue is not only the total grams but how far the centre of mass moves forward from the face. As front load rises, the nose and ears must distribute that force more effectively, and inadequate bridge support makes downward sliding more likely.
02 · BRIDGE
How the bridge supports the weight is critical
If bridge contact is too small or the wearing height is wrong, a large sunglass frame may not remain stable.
Look at where the bridge actually rests on the face rather than judging only the lens dimensions.
Bridge geometry determines how that load is transferred to the nose. A plastic bridge touching at only a small point or small metal pads carrying a large front load can concentrate pressure even if the sunglass is not especially heavy. A broader, stable contact area can distribute the same force over more skin.
03 · CHEEK
The lower rim can contact high cheeks
A frame may look fine at rest but move upward when the wearer smiles or talks if the lower rim touches the cheeks.
In that case, consider lens depth, bridge height, pantoscopic tilt and facial structure instead of simply tightening the nose area.
If the frame is much wider than the face, the temples may provide too little lateral stability and the front can slide; if it is too narrow, temple spread and pressure increase. Oversized lenses attract attention visually, so it is easy to overlook overall frame width, but fitting still begins with width relative to the wearer face.
04 · EYELASH
Too close can cause eyelash contact
If the frame sits very close to the face, eyelashes may repeatedly touch the inner lens surface.
If it sits too far away, the frame may float away from the face and admit more light from above and the sides.
Cheek and eyelash contact is not caused by size alone. A low bridge position or unsuitable face-form and pantoscopic relationship can move the lower lens edge toward the cheek, while too little eye-to-lens distance can create lash contact. With a large lens, small positional changes can produce larger changes at the lower edge.
05 · TEMPLE
Do not solve slipping only by squeezing the temples
Strong side pressure or an excessive bend behind the ears may temporarily hold the frame but create pain at the temples or ears.
Check frame width, bridge support, front weight and facial contact first, then make fitting adjustments within a reasonable range.
Do not solve every sliding problem by increasing temple pressure. First check front alignment, bridge support, overall frame width and clearance from cheeks and lashes. Temple length and the bend behind the ear should be adjusted after those fundamentals so the load is distributed rather than simply clamped at the sides.
GLANOS LENS CHECK
A practical fitting order for large sunglasses
Check level and wearing height.
Make sure the bridge carries weight stably.
Smile and talk to check lower-rim interference.
Confirm adequate lens-to-eye space.
Adjust temples and ear bends last.
CAUTION
Do not solve an oversized sunglass fit only by increasing temple pressure
Slipping can be the combined result of bridge geometry, front weight, frame width and facial contact.
GLANOS EYEWEAR
Eyewear comfort has reasons.
Oversized · Fitting · Cheeks · Bridge · Temples