Slow eating dog bowls

Hi there,
Could I please have some slow-eating bowl recommendations?
Many thanks.

Outward Hound slow-feeding bowls are very good and get high reviews! They sell them on amazon.

Also, Lickimats (depending on what you feed) are my favourite if feeding soaked dry food, wet food or raw food. Also on amazon and many different websites, you can get lickimat bowls too.