I have a 70 litre longbox by Iceytek. Use it in the boat, use it travelling the Sth Island. Using it this long weekend as it will keep all food cool. I pre-chill the thing by rotating frozen juice bottles through it a couple of days before departure, then sit said frozen bottles on a galv steel mesh offcut with the food under. (Cold air settles as you know). This kit keep all our food in excellent condition when in the back of Molesworth a couple of years ago.Ice lasts about a week. As bottles thaw, recycle them and buy ice bags from retailers. As they leak lots, I place food in plastic containers to protect from water. Only gripe is the rebated lid takes up about 75mm of vertical space, otherwise excellent.
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