How to sell single product?

So I have been researching a couple keywords and different niches to start drop shipping products. I have one product in mind I would like to drop ship and promote via FBads.... so my question is what is the best platform to sell this single product? I have looked at leadpages.com

The landing page ideally would have the product, allow the user to choose different sizes, and obviously purchase the product! (Not clothing niche)

Any and all input would be appreciated!

I have used Wordpress Thrive builder to sell a single product with different variations. Give it a try.

Thanks for the input I’ll mess around with it and PM ya if I have any questions.