Material, optics and processing are measured against the price outstanding. What I not so much like: The length does not match the Amazon chart. The belt is 1.5 cm shorter than it should be in the dimensional table and I'm grad 'so on the border with the ordered length, this Millimeterchen missing just now. The hole spacing is greater than market rates (at least compared to my other belts). As my belly in the level has a slight slope to the yo-yo, I do not always a hole where but he does not sit well stretched.