Perhaps he wore the thing for medical reasons.

He wears them for medical reasons due to a sensitivity to light.

The ban did not apply to players who wore them for medical reasons.

Passengers may be exempt from wearing a seat belt for different reasons.

Men usually wore no clothes training for military reasons.

There are many forms of jewelry worn for traditional, social or religious reasons.

There are also devotional medals which may be worn for religious reasons.

Dreadlocks aren't always worn for religious or cultural reasons.

Some women wearing manteaux would also wear them for religious reasons.

Some people refuse to wear pantyhose for ethical or economic reasons.