Ordered along a powerball I could do without. While the powerball is perfect, the housing sold separately is poorly designed and realized in ultra materials "cheap". It is only fair and it takes downright crush on the ball if you do not want the fair zip instantly. No need to try to add to the string and even less the strap is impossible. Unlike the powerball made in Taiwan, the casing is made in China. Find the error. It's not expensive but totally stupid because unusable. Instead of investing 3 stupidly like me in this case, pay a coffee to your neighbor, at least he will smile. I should have before buying read reviews that all go in the same direction. Amazon should remove this item from its catalog and offer another a little better made what should not be hard to find.