The ball was delivered, I was once a fright because Gloss is translucent. On the product image he saw even treat white glossy from. According to the ball holding out 500 KG. Still, I had at first hesitated to put forward just because he is transparent. The queasy feeling but vanished quickly. Meanwhile, I find clear even great because the ball micht is so present in the room. My son has a dunkelrünen and apparently takes up more space. Very positive highlight is the odor neutrality. That was very important to me, so I've read other reviews before buying. The ball replaced my desk chair, which is first exchanged only testhalber, but now completely scrapped. I suffer from severe back problems. Sometimes I wake up at night and can not lie. Then I sit down on the ball and the pain subsides immediately after. In my present situation it is simply priceless. He became my favorite place, this super thing. I can purchase such a ball only recommend to anyone the back problems or has only wants no get. The sitting posture is simply different than on a desk chair. It is always something in motion and doing back just fine. Besides, it's kind of fun, therefore I have a yes my son ordered. Oh, 65 is a good size for me with 1.64. But for my son with 1.55 he should not be less. We had only ordered for him a number of small and then exchanged again. I hope I could help you in deciding.