I have a folding styrofoam box from Wally World.
Long about July or August I unfold and toss in some "Blue Ice" type bricks when I go grocery shopping.
I have a large "Coleman" (also styrofoam but plastic inside and out so you don't see the foam) ice chest that subbed for my fridge for 2.5 weeks when the fridge failed (now Amish Built Cooling unit works great)
But that inflatable...... I think not. $99.00 I KNOW not!