Description: PREMIUM PUNCHING BALL: The speed bag is made of quality thick PU, Polyurethane material, The sphere and body shaft is strong and sturdy, durable, has strong extensibility, high elastic, and not easy to break.GREAT TRAINING EQUIPMENT: Boxing Speed Ball can help train reaction, agility, punching speed, skills, and hand eye coordination, home gym interesting workout.EASY TO Set: The punching ball no screws needed to attach it to desk or countertop since it has a suction cup as a base,can easily stick it to any flat and smooth surface.STABLE AND STURDY: Stable without fracture, metal spring, smoth steady, speed can keep up with strong adsorption, seamless.SPECIALLY DESIGNED: Desktop boxing punching bag is suitable for boxing, fighting, and other punching training, and for professional use in gyms, and workouts at home gym. Specification: Material: PUSize: 19cmx37cm or 7.48inchx14.57inch Package Includes: 1 Desktop Punching Bag1 Air Pump