Not sure what's happening with Crocs but it seems that people are absolutely obsessed with them at the minute.
Anyway, these are Crocs x Staple Pigeon, which come with a unique Homing Pigeon NFT.
Actually it's the other way around, only 246 NFTs will be available (on September 10) and each NFT holder will receive a pair of physical shoes as well.
The NFT will be available on Staple Pigeon's very own marketplace called the 'Stapleverse'.
If you don't care about the NFT, you can buy the shoes on September 13, priced at $75.