I don’t know if you’re still looking, but I bought this one and like it a lot: https://www.statelinetack.com/item/wiksmart-premium-cooler/E032583/
There’s a chest section and a belly band. It’s a little fussy to put on and take off just because there’s a lot of fabric but it’s comprehensive. The only other small complaint I have is that the neck seems tight for my horses, but it’s not a dealbreaker at all.
