Baby crib

Alexia

What can I put around the bars in my sons crib besides bumpers or mesh crib liners ? I heard they aren’t safe. He likes to put his feet in between the bars or put his face directly up to the bars too and it makes me nervous Any recommendations ?

**UPDATE decided not to put anything in there I read too many things about suffocation / strangulation so I decided not too thank you for all the help though **