The pheran has an open collar down the neck with heavy folds.

All soldiers wore neckties of the same colors except in summer, when the uniform shirt was worn with an open collar.

The soldier's uniforms changed with military fashion, going from high collar to open collar and from puttees to leggings.

His own attempt to grow a cad's mullet was never very convincing, just as his open collars don't look relaxed, merely tieless.

Open collars revealing sprouting chest hair (or just too many undone buttons revealing sprouting chest).