Nike NFL New England Patriots Tom Brady Jersey Navy Dear NFL Jersey Customers: We are constantly asked by new customers, how can they be assured that they are purchasing an authentic NIKE NFL JERSEY. Listed below are several key aspects associated with a Nike Authentic Jersey that can hopefully help you in your decision making process. Every point mentioned below can be verified by visiting NIKE.COM. Thank you for taking time to evaluate our AUTHENTIC NIKE JERSEYS. • Nike jerseys have the famous Nike “swish” logo on them (caution – even the knock-off jerseys will have this on their jerseys • Nike only offers the following sizes and the size is clearly shown on the sewn tag on the bottom left hand side of jersey – S, M, L, XL, XXL, XXXL, and XXXXL. IF THE SIZE SHOWN IS A NUMBER, I.E., 48, 52, ETC., ON THE TAG OR IN THE SELLER’S DETAIL PAGE, THEN THIS IS NOT AN AUTHENTIC NIKE NFL JERSEY. • Our experience on Amazon has indicated that the knock-off jerseys are frequently listed as “ By On-Field.” • If it does not state clearly by “Nike,” then you need to take great caution before making your purchase.