Portable Foldable Insulated Food Container - Thermal Lunch Box for Car, Travel, Camping & Fishing | Keeps Meals Hot/Cold | Perfect for Picnics, Work & Outdoor Adventures (Black)

I purchased mine yrs ago & use it every time I get groceries. I have mine in the back of my car for groceries at all times. I mean business when I go grocery shopping... Lol... cuz I only do it about once every 2 wks. or when I absolutely have to because I hate grocery shopping. Despise it, actually. But this thing can keep groceries cold for up to 10hrs. & that's including not letting the ice cream melt even a lil. It even stays completely frozen. And the rolls of frozen hamburger meat are still hard as a rock like when u purchased even after many hrs. And this thing doesn't require any ice at all. So I have definitely tested it out tho here & there. But this thing is awesome!!!! I can't imagine not having it. ?