How can I baby proof the railings at the top of my stairs?

CheesyPotatoes

I am working on baby proofing our place. The railings at the top of our stairs are too wide, and I’m wondering how other people have baby proofed too-wide railings. I have seen some products for this- anyone find one they like? Didn’t want to post in product recommendations in case someone has insight but doesn’t have a specific product in mind.