What it is, and why it behaves this way
Aluminium alloys combine an aluminium base with other elements. Low density and a natural oxide layer are useful starting properties; alloy choice, treatment and finish change the result.
Weight in context
Low density helps at equal volume, but thick construction can still add weight.
Flexibility & adjustment
A rigid front may offer little adjustment. Do not treat all aluminium frames like bendable wire.
What to check when trying on
Check adjustable areas and replacement-part availability before choosing.
Care & limitations
Avoid forced straightening and repeated bending; follow the finished-frame care instructions.
Put it into practice
Example: an aluminium front and plastic temple tips need different adjustment techniques.
A common assumption to check
An aluminium-magnesium label does not reveal composition, total weight or service life.
Sources & scope
Page updated; sources checked: