ok so i got a pair of green iv's, i tried them on and i tried them on and i felt some biting on in the centre of my ankle(At the bak), wondering if i should try the tennis ball trick, but im worried it will strech too much and not form to my ankle?

You start so many needless threads. You got your answer in nike.

its not that big of a deal just let them saywhat they need to say. its just a more specific thread.