The Callaway Tetrad Hitting Net has a unique, durable fiberglass "X" frame with heavy-duty netting (rated up to 150 mph ball speed). The unique design promotes easy setup/takedown and the included carry case allows you to take it anywhere. The Tetrad also comes with a hanging target to help sharpen your aim and ground securing stakes. The Callaway Tetrad Hitting Net is 6' x 6' in size and is free-standing for indoor or outdoor use for fine-tuning your full swing year-round.