Here's what the Orbs CCG rules say:
"The Bench is a game zone where cards are placed face-down. You can see your own benched cards, but not your opponent's benched cards.
Benching cards can be thought of as pre-playing them. Like playing, it costs energy to bench a card, however cards can later be played from the Bench without repaying their energy cost. Additionally, allies and objects can be played from the Bench during your Defense phase (they normally can't be played from your hand during your Defense phase).
Trap cards are used from the Bench, rather than in play. They trigger when some game action occurs, and then are placed in the graveyard."