PLEASE WAIT FOR DELIVERY: Because these combo products may be supplied in multiple boxes, shipping times may vary. STURDY AND DURABLE: Made of 1-inch steel tube with a powder-coated surface, our plyo box can hold up to 550 pounds and is built to last through even the most intensive workouts. READY TO USE: Our steel step for exercise at home has been pre-assembled, saving time and effort; There is no need to be concerned about jump exercise box shaking while in use VERSATILE PLYOMETRIC PLATFORM - Use box jumps, push-ups, dips, step-ups, agility, cardio, stamina, and conditioning training to strengthen your shoulders, arms, chest, glutes, legs, and other muscles SELECT YOUR SIZE: The plyo box comes in sizes of 12 and 18 inches; This step platform for exercise at home is ideal for personalizing your workout routine and achieving your fitness goals