u/Frethor87

Hello everyone. This is my 4th sneaker on Balenciaga after Speed, Circuit, 3XL. I just bought these sneakers for 390$ and they’re brand new, never worn. Has anyone ever come across bluish stains like this before? Do you have any idea what it could be? What could be causing these stains? Are they removable? Do you think the product is defective? Should I return it?