Before revision: Woman working out with a speed bag thumbtime=1|Gus Keller, 1903 Speed bags are small, air-filled bags anchored at the top to a rebound platform parallel to the ground.
After revision: (AKA, speedball)(AKA, speedballs)Woman working out with a speed bag thumbtime=1|Gus Keller, 1903 Speed bags are small, air-filled bags anchored at the top to a rebound platform parallel to the ground.