The Cool Gear Can is easy to open by just sliding the slide2open piece upwards, but not TOO easy, it does not leak. I also thought that the designs are fun, and playful. I also don't have to worry about my 2 year old cutting himself, the Cool Gear Cans top, and lid are made out of BPA Free Plastic.
I use reuseable IceCubes in mine, they are just icecubes you refreeze, no water needed, so that my Cool Gear Can stays colder for even longer than the 6 estimated hours. Cool Gear has reuseable Freezer Sticks, that do the same thing! Those are pretty cool, no need to worry about having water for your sticks, just refreeze the reuseable ones.
This is a great product, and personally for myself, it tricks me into thinking I am drinking a soda, but I am not. To me, it's helping to break a habit.