Nike air max 270

These air max are size 8 and all black. They have only been worn in my house twice. I have wood floors and live in the PNW. sadly these would not be loose enough for me so I hoping to purchase a bigger size. I would call them new but have been worn inside. They have been hanging on my shoe rack ever since. The left shoe on outer toe has a slight scuff mark but hardly seen. Thanks for looking!