I have done my due diligence on harness training, but I was specifically wondering if anyone uses a second harness? My cat is very strong and flexible so I was scared he might slip out of his harness, which is this one: https://www.amazon.com/dp/B0FQNFNDSD

He tolerates it well but I’m worried that it’s too easy to get out of.

I was wondering if a second harness that was more strappy could act as a failsafe and if anyone here has done that.