Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: When frozen do these turn to a solid state or are they soft?  I need solid to carry-on to a plane with breast milk.  Thanks!
Document: they leak when unfrozen and turn sticky. they dont stay that cold when frozen. Keep with the hard plastic packs they work better and longer. Not impressed I trashed them all. and dont waste your money
I made homemade Guri Guri (like a sherbert) for a party and used these packs to keep them frozen in a cooler. Put them in a cooler at 11:00 am and whatever was left of the Guri Guri was still frozen solid at 9:00 pm.
3.5 stars  I bought these because I was shipping some frozen items across the U.S. They worked o.k., but not great. Some of the food was starting to thaw out even though it had only been a couple days. The original description makes it seem like the items will be frozen solid (like dry ice). It looks like they updated the description and this is only true if you have a blast freezer than can get the gel packs as cold as dry ice.
This is the greatest way to keep foods cold with little space. We put these in a cooler and put them on the plane to St. Croix and everything was still frozen when we got there!
Purchased a six pack of these for a five hour drive to Yosemite. The techni Ice did not maintain a frozen state just for the short trip to YNF. We never opened the cooler until we got there. In addition, the internal goo was all over the drinks and food.I followed the directions for set up. Froze for two plus days.We will not purchase, recommend or use techni ice again.
I have bought these several times I use them for my medical needs and they are my life saver. They give me relief where and when I need it.
I LOVE these ice mats! Not only do they keep my cooler cold longer, when I leave them in my freezer, I can turn down the power settings. They are saving me $ by keeping my freezer cold! Thank you!
I needed to have something that was not dry ice to transport food while traveling. I was intrigued by this product and decided to purchase it from Amazon versus directly. I love that it starts flat and expands because I do not always know how many I really will need. The product stays cold for very long and I like that you can cut it to fit your needs.
Also very useful for injuries! It works for coolers and carrying groceries that need to keep cool. Very good buy.
these work well for placing in a carry bag, to keep item cold while going from one place to another, they lay flat , so that is a plus as well,
Answer: yes