Double the fun with two Micro, soft foam, leather-encased balls (70mm diameter). No need to inflate them! Instantly adjustable so suitable for kids & adults. Tension can be changed for faster or slower speeds. Ultra-quiet, perfect for home or apartment use. Engineered for accurate power punching & combinations. Includes 3, adjustable squeeze tabs for optimum bag tension. Made with a 2.7m, heavy-duty, stretch elastic cord for use in shorter & taller areas. Plus, comes with a mini floor anchor to save time installing (filling not included).