You can get 3 good sized roe,or 2 sika hinds,or 8 mounties into the igloo box
A frozen bottle in each cavity like below helps,but these luckily were in a chiller over night.I have shot a young sika in the Highlands and its kept perfectly fine over a weekend then endured the 8 hour drive home.
Alternatively,if you have space,you can build a ply box and line it with insulation for the plasterers bath.That also worked a treat but it was far too big to move on my own.
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