G-Form Right Hand Batter Left Leg Elite Batters Leg Guard

My son says the comfort, feel and look are all great. He took a foul ball off the foot and it did it's job perfectly. But, the elastic strap that stretches around the bottom of the foot is already almost severed from his metal cleats hitting it after the first four week of tournaments and batting practice. Why isn't this strap either designed to be replaceable or made tougher?