ALL MY FOOTWEAR IS 100% NIKE AUTHENTIC. PLEASE, IT TAKES INTO ACCOUNT THAT ALL BRANDS HAVE DIFFERENT STANDARDS OF MEASURE. FOR EXAMPLE NIKE / PUMA / ADIDAS IF YOU HAVE ANY DOUBTS ABOUT YOUR SIZE, JUST REVIEW THE CENTIMETERS OF THE SHOES YOU NORMALLY USE, THAT NEVER FAILS.If you are unsure about size, I recommend that you ask me that or try on the same item at a store near you. The goal is that you get a great price if you keep the item. The item "9 WOMEN'S Nike Air Zoom Cage 3 Red Silver 918193 602 Tennis shoes Multicolor NEW" is in sale since Saturday, August 4, 2018. This item is in the category "Clothing, Shoes & Accessories\Women's Shoes\Athletic Shoes". The seller is "sport-shoes" and is located in Kissimmee, Florida. This item can be shipped to United States.