Doggy Car Seat

So I am looking for some booster seats/ Seatbelt type things for Bentley and Bailee. Every time we go for a drive they BOTH insist on sitting on my lap. SOO I was thinking if I got them a Booster seat for dogs I could strap them into that so they could still see outside but my lap would be free of dogs. Im looking for something not too expensive.. anyone know of any or have used them before that can fill me in?

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