Excellent for the diaper bag!
I know this may be a small market for what this cooler is intended, but I needed a cooler pack for my diaper bag to store my frozen pumped milk (and later for frozen baby food). The milk bags fit perfectly and it keeps frozen/cool for an impressive period of time (we're talking 6 hours or more, in my experience). Makes traveling less stressful by eliminating the worry that milk will defrost and spoil on a trip.  Fits perfectly in any diaper bag--I found most cooler bags specifically marketed for diaper bags were insanely bulky.
Rating: 5 stars