It fits great on my White iPhone 5S and combines great as well.
After a couple of months now, the back is slightly scratched but nothing serious.
The side rubber is in good condition after 2 months, but will update later on if I see something different.
In terms of protection, I've dropped my phone a couple of times and nothing to report :-)
I have a glass screen protector and it doesn't interfere with my case which fits perfect and very tight.
The bottoms work great as well. Fully recommend