Rains Unisex Backpack Daypack (pack of 1)

Q: Are the straps comfortable?

Yes, I have found it very comfortable. I usually have a laptop, wallet, keys, and a bunch of other stuff (so it isn't light) and it's still very comfortable.

Q: Will this fit a dell 15" laptop?

Well it easily fits a 15" 2010 MacBook

Q: Does the backpack have bottom padding so the laptop may rest nicely w/o any potential chance of damaging it?

I have owned — and loved — this backpack for 2 years consistently carrying my work laptop (MacBook pro) and my iPad with no damage issue. There is no padding but also no need for it