The inner foam got soft with 4 uses. When you pay 3000 for a shoe from a brand like Yonex you want it to last at least 3-4 months of continuous heavy usage. Instead, I got this lemon. I will discourage all from buying this. Better go to shop, try ASICS or Adidas or other non marking brand shoes and be satisfied with spending so much. This is not worth 3k. Not even 2k. I was happier with 1k I spent for Nivia that lasted a lot longer. Read more