Medport Travel Organizer 2 Replacement 6 oz Cold Packs Size: 4" X 6" X 3/4"

I bought this to keep yogurt or milk cool in my lunch bag at work. I use both packs to be on the safe side. I must say I was quite amazed at how many hours it stayed frozen. It did exactly as advertised.

I never expected those ice packs to last forever. I just them to keep insulin cold when traveling. But these packs leaked on my very first trip. I had to wrap them in plastic for my return flight.

Does what it is supposed to do.

My parents put these cold-pax in my younger sister's lunchboxes so that their food stays cold when they take it to Montessori.Since I like to bring my own lunch to work and it is pretty hot outside (I live in Las Vegas), I wanted to keep my food cool in my lunchbox while I walk to work. I picked these because I know that they work and the price is good for 2 cold-pax.

Have used these for years in my insulin kit when I travel. They work ok but they eventually start leaking - even though it states it is leak proof. This is my third set of cold-pax. If they really were leak proof they would be great but they only last me a year maybe longer if I start putting them in a freezer bag.