Impressive. I would just hype the configurator itself. The 571,000 variants is cool, but it appears to mostly be color or image differentiations which is why it fits in 417kb. None the less it's a nice configurator.
Thanks - and you're right, almost all of that size is the leather texture and thread images. The rest is just svg and some css tricks. Visualizing what their choices would look like together was a big problem for customers, and we were excited to solve it in the size of a large jpeg.
I'd really like to see a write up of how this works and what you did.