Humeral Veil

You may have noticed that on Corpus Christi, Father held the monstrance with his hands wrapped in a scarf like thing. That's called a humeral veil. It is usually white or gold, but may also be the liturgical color of the season.

Not Father Uriel. This is retired Cardinal Godfried Daniels of Belgium.

The humeral veil is not to be confused with the vimpa, which is narrower and worn by altar boys when the Bishop is present. The use it to cover their hands when the Bishop hands them the mitre or crosier.

The hat is the mitre; the staff is the crozier.