From LEGO Batman Wiki
|User||Batman and Batgirl|
|Powers and Abilities||Able to glide with built-in wings to cross gaps.|
The Glide Suit is a suit upgrade for Batman and Batgirl unlocked in the second level of the game. This allows Batman or Batgirl to jump and then glide down to the ground using built-in wings, very useful for crossing small gaps that you can't jump over.
With the upgrade (only as Batman) you can slam into the ground in the middle of your glide, creating a small seismic wave hurting all guys right next to you.