Dog Backseat Hammock for Max

[Caitlex]

Anyone have a Defender Max and purchased an off-market backseat Dog Hammock?  My husband has one in his trucks backseat for our Doberman, but it’s a tad to big for the Defender Max.  Need the kind that covers the backseat and provides protection against him biting on the back of front seats (he is only 5 months old but 45 pounds with another 50-65 pounds to go)  Photo is similar to what I’m searching for.  Yes, I can order another on Amazon, but looking for a better fit and had hoped someone uses one that fits perfectly.