The Guardian. It’s definitely heavy and bulky, but after several trips to the beach, appears to successfully keep out water and sand. There are a few downsides to the case. The areas covering the buttons and joystick are soft plastic so you do lose any ability to search, type notes or jump pages. Also, if the kindle is left in the heat for too long, condensation forms on the outside of the case. However, the inside stays dry and after a good wipedown the screen is clear once again. Second, the case comes with a screen protector that sticks to the screen on the kindle. I have not quite figured out why only the screen needs added protection, but I am considering forgoing it. The protector is intended to be the same size of the screen but is not cut properly and is a little too large. As a result, air bubbles form, making it difficult to see the screen. Finally, the only way to turn the kindle on and off is to open the case. This involves opening the 4 latches that secure the case and is a bit inconvenient if you’ve just come out of the pool. However, if your goal is to protect your kindle from water and sand, this case does the job well.
On the other hand, the Otterbox Defender series case doesn’t protect from water or sand. It’s killer feature is the drop-proof protection that this almost 2 lbs. case offers. The iPad fits snugly amongst all the padding and protection on the defender. When in-use the screen and buttons are accessible, allowing complete functionality. But don’t fret, when you want to pack-up, put your iPad down, or walk around with it, the back of the Defender flips to the front, offering full 360 protection.There is also a built-in sand to make it more comfortable to work with. Last but not least, there the bottom and sides have rubber/silicone coverings to make sure your iPad doesn’t slip on any wet surfaces (though if it were to, you would be more than protected). While I wouldn’t recommend it to the beach (too much sand) I think this is a great addition to pool-side items.