Reddit reviews Neoprene Lunch Bag: InsigniaX Cool Lunch Box/Cooler/Lunchbox for Adult Women Men Work School Kids Girls Boys SizeH: 11.8" x W: 6.1" x L: 11.5" (Large, Black)
We found 1 Reddit comments about Neoprene Lunch Bag: InsigniaX Cool Lunch Box/Cooler/Lunchbox for Adult Women Men Work School Kids Girls Boys SizeH: 11.8" x W: 6.1" x L: 11.5" (Large, Black). Here are the top ones, ranked by their Reddit score.
I agree with what has been said so far. A soft cooler is the best way I've found to keep formula cold. That's what we use for daycare and if we go to someone's house. We have heavy duty ice packs that will stay cold all day in the cooler so I don't worry about putting any leftover (note: not drank from at all) bottles back in our fridge at home for overnight use. We also have a small two bottle bag we got from the hospital and it works the same way only for a little less time.
ETA: We use something very similar to this with an ice pack like this.