How to buy new watch bands

How do I order a new band? I’d like a variety but can’t find a way to just buy a band.

We bought ours on ebay from 69radioman,I got the blue and my wife got the pink,there also on as well

Welcome to the community @hhumphre

Go here and scroll down to the Band section:

Also note, that they use the standard size for the locking mechanism.