Hello There,
My name is SM (from smtechnology).
This is a link of a project which I did and is almost similar to yours, please check here:
https://www.freelancer.com/projects/Manufacturing/Find-supplier-for-new-sports/
So, I know your requirements and I will definitely give you the details of drop-shippers that sell KYC Vintage hats, shirts, jackets, or other trendy gear.
Thanking you