Speedbag Meaning: The Boxing Training Bag

A speed bag, also written “speedbag,” is a small air-filled punching bag attached to a rebound platform. In boxing, it returns quickly after a strike, allowing the athlete to practise rhythm and timing. Wiktionary records the alternative spellings and describes the equipment.

Speed bag versus heavy bag

A speed bag rebounds rapidly and is commonly used for hand rhythm; a heavy bag is a larger target used for different striking drills. A speed bag is equipment, not a particular boxing move. A boxing terminology guide includes both terms.

Reading the word in context

“Working the speed bag” means practising on the equipment. The phrase itself does not specify a training programme or guarantee a fitness result. If a video or product uses a different meaning, check its context rather than assuming the boxing sense. Sources checked November 7, 2026.