The shoes have never been worn. They come with a container to make Swoosh ice cubes.
The Swoosh and the back tab of the shoe change color in the sun.
Swoosh on the outside of the shoe = blue
Swoosh inside = yellow
Back tab = pink

Description on the lid of the shoe box:
"The swoosh, back tab and tongue of these AF1s have UV reactive finish. Intensity of color change depends on environmental conditions. After approximately 8 hours of exposure to UV light, the inks will no longer change color. Final color varies and will be unique to each pair of sneakers depending on environmental conditions and UV light levels that shoes are exposed to. Use swoosh tray to make ice cubes. Fill tray with water and place in freezer until water is frozen."