The bottom has a rough, dirty look by design. That's not dirt. Brand new, unworn. Nike Air Max Terrascape 90 Running Shoes Men's Sz 14.0 SZ 14.0 ***The item is Brand New in the ORIGINAL BOX WITHOUT LID. All sizes are in US sizing unless otherwise noted. We typically ship within ONE business day. Everything we sell is 100% authentic. Offers will always be considered. Any questions, please don't hesitate to ask!*** DQ3987-100