Sentence examples for are optional for from inspiring English sources

Jackets are optional for men.

The space standards are optional for local councils to adopt.

Helmets are optional for Nascar crew members, but only a handful wear them.

Side air bags are optional for the front seats, and antilock brakes are standard or available on all versions.

But because those tests are optional for graduation, the mayor put his foot down when asked if he would make a few calls to save them, too.

Even had it been a real wedding, gifts are optional for encore weddings, and the couple was off-base trying to encourage gifts and to further specify a particular gift.

Reading the book is optional for members.

First, the reforms will be optional for local councils.

Should membership of a nation be optional for minorities?

A must-have for die-hard fans, the book is optional for everyone else.

There already does appear to be agreement that any system would be optional for senders.