Thermos Stat ! 

Retro-fitted: As things get cooler it only makes cents to turn it down, in order to save. While temp is the order of the day, which is now in most houses auto controlled,  what we’re talking about here is Yeti another rediscovery of a brand that preceded Stanley’s steamers (the ones that not only keep things steaming hot but incorporated the technology of vacuum sealing and steel to replace glass insulation), which took them about eleven years after the Thermos brand was branded, which in turn was a result of earlier technology called "cryogenics" and assiduous effort from Sir James Dewar — both getting rebranded as something really 🆒 by those who are still too young to remember, who now act as if they have something "brand spanking new" in their hands. Of course, that was way before the brothers Roy and Ryan, got frustrated with stuff spoiling in the Texas heat, came out with what has become known as a "premium outdoor brand" of coolers, designed for the wild west (thus "Yeti") - most contents of which are consumed inside (well, occasionally outdoors at tailgates). Now, as far as lunch boxes and those new-fangled picnic baskets that masquerade as anything but... "it's why they have packaging engineers as there's one for everything" At least that's what my friend told me, whose son aspired to be one (add marketing majors and you've got some new, old brands💲💲).