Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Is this backpack waterproof?
Document: my only disappointment was my dell XPS15 is a little too thick to fit in the compartment. It just fits shut but is not likely waterproof. I wish they had published the thickness allowed. I might have to buy a new laptop to fit the bag.....everything else is better than expected
Expect nothing less from Pelican, glad they got into making backpacks.I use mine every day, and I have travelled with it a handful of times. I like that i just do not have to worry at all about my 17&#34; macbook pro- it is kept waterproof and shockproof inside the integrated pelican hard case.
The pocket is also somewhat waterproof with a self sealing cover.The handle is very heavy duty as well, solid heavy plastic with steel pins securing it to the case portion of the bag.You cannot pack too much into the main pocket, even with the cinch straps loosened up all the way. Not a good bag for long travels if this is all you are bringing.
Very high quality. Outstanding protection for laptop/notebook. Fortunately, I have not needed to use the waterproof feature, but it inspires confidence. I commute by snowmobile from time to time, and it held everything nicely in place. One minor concern is that it is not the most convenient to fly with. It can fit under most airline seats, but it sticks out a little. The rigid nature of the frame protects well, but doesn't allow for any stuffing under a seat.
Great for travel. Awesome backpack with plenty of storage and keeps it all safe secure and stable. I highly recommend.
Great backpack. Lots of compartments and accessories. The only negative thing is that the backpack doesn't have a zipper on the top. It just has a flap that covers the top of the backpack.
Great piece of gear! This backpack will last a long time. My computer fit in the hardened casing perfectly. Great job Pelican!
One design flaw makes the backpack useless in the rain. If you need water protection for not just your notebook but also the other stuff that you carry in your backpack, the S100 is NOT the right choice for you.
I love this backpack. My laptop was thicker than what the specs said could fit, so I took out one side of the padding and it fits perfect. I feel a lot better about carrying my laptop around in this instead of just a cloth backpack. A lot of customization ability.....and im kinda a pelican fanboy sooo...
Very happy with this backpack. I dropped my 15" MacBook Pro a couple of months ago and had to pay >$600 to get it fixed (BTW: don't do that). Since I'm obviously very clumsy, I decided a nearly indestructible bag was the way to go. This bag is comfortable on my back, but it is heavy. Still, I wouldn't trade it for another...very happy with this purchase.
Answer: The case is waterproof, the main compartment is water resistant.