Sponge is a Shield Generator in Borderlands 2.
Can be purchased from Seraph Shop using Borderlands 2: Seraph Crystals
Requires Campaign of Carnage
Stats
(Note: Actual Stats will vary based on level)
Capacity: 38078
Recharge Rate: 6093
Recharge Delay: 3.75
Absorb Chance: 34%
"Highly absorbent!" (red text effect)
Chance to Absorb enemy bullets.
Absorbed Ammo is added to your backpack
Manufacturer: Vladof