as soon as my son wears it, I observed his ball touch is more solid and firm. The improvement of shooting power is observable with naked eyes, compared with his last pair Nike Mercurial Vapor. The down side is very hard to squeeze in. Always need my help to wear them. and my son got blister on his heels which is the biggest problem. I only let him wear 10 minutes each time and change to the old shoes. 2 weeks now, still has no improvement
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