Once again I am dealing with shipping issues and seems like either UPS or Stockx employees are stealing shoes. I sold a pair of shoes and sent it for authentication it arrived there on Monday the 20th. For over a day I didn't hear from them then they emailed me saying I sent an empty box. I have proof of delivery with the weight documented at the ups store and they are just ignoring my emails now. I have sold 17 shoes on this app and this will be the last time. Also if you do ship anything make sure you don't lose your drop off receipt or stockx will just steal from you.