This product seems designed to protect the passport readings attempts related to lack of protection of these new RFID chips. The integrated metal mesh seems to be really consistent and effective. Customs ask out the passport from the case because they do not read it so if it is effective against the statements of readers we may think that the distances to readers will be difficult and that is what the we ask this. Manufacturing is in good order. Anyway I took a gift for my daughter who travel extensively and I will acquire the rest of the family.