Hi, I have been using Li-ning ranger speed (AYAN017) shoes for around 3 months. First impression is the grip of the shoes was very good, I would say it is one of the strongest point of the shoes. However, after a couple of months, the outsole wears off very quickly and the shoes unfortunately become very slippery. For information, I weigh 70 kilos and play 2-3 times a week on average. I clean the outsoles with damp cloth every time when I return home. The outsoles of my other shoes, the Asics gel blade 6, which I also use for almost 6 months now is in a better condition. So is it just me or Li-ning shoes have durability issues, especially in terms of outsoles? The "Bionic gloove grip" technology which Li-ning promotes felt really good at first, but seems like they don't really last that long at all.