Do Eskies have one continuous air pocket and what stops it from breaking?

[orabrush]

With Eskies is it one continuous air pocket or is there a lot of joins and bridges inside the walls of an esky. It seems to me that they would be easy to break. Or does the air pressure inside the air pocket keep the inside wall from being flimsy and easy to break?

[kilroy_is_here]

The gap between the inner and out skin is lined with polystyrene

[this-one-time-at-bandcamp]

I'm sitting here wondering how they line an Eskimo dog with polystyrene.................then I googled.  Over here we just call them coolers.....

[imastawka]

Chully buns  Chilly bins in NZ     (sorry, can't help myself sometimes)

[tcmsecretuseid]

Ice chest 

[jimmy*part4]

[lloydslights]

I can remember polystyrene eskies.  Disposable eskies.  

Used upside down as lifebuoys when someone fell out of the dinghy (after having emptied said lifebuoy of its contents).

The boys used to fill 'em with KB gold cans/ice and bring them to the cricket.  We used to sit on the hill at the SCG.  

When emptied, about 2pm the lid and sides were used as sun visors.  

Going home empty handed.

*******

This-one-time.....our Eskies/coolers are similar to your Hoover/vacuum turn of phrase.

DEB

[the*scarlet*pimpernel]

KB Gold, whoaaa there's a blast from the past.

When eskies became plastic, the lid was good for using as a toboggan on grassy hills