Love these...
This 3 pack of cold bags are great for various applications.  A small, medium and large bag for the appropriate sized part.  They keep the ice cold for awhile and the bag is made of a thick waterproof material that allows some material between the ice and your skin which is necessary, you don't want the ice directly on the skin.  Lid stays on tight and doesn't leak.  I did notice that they tended to sweat a little.  Other than that, I love them!
Rating: 5 stars