1 of the 2 Nike AIR FORCE 1 GTX colourways we checked has a clean material label, but it publishes no product description, so we cannot rule out a smaller animal material such as a suede overlay. Nothing here is confirmed animal-free. 1 contain leather, suede or another animal material. Check the photos before buying.
1 animal-free colourway from £129.99 at Zalando

The material label is clean, but no description is published, so a minority material such as a suede overlay can’t be ruled out. Check the photos.
Contains animalThe material label itself lists Leather.