I got this cover today and put my kindle right into it. The k3 fits very nicely, with the bottom two straps just barely covering two of the buttons. The cover looks really good and I love the magnetic closure. This one is a keeper and you can't beat the price! I didn't even open the screen cover pkg. as I have no interest in putting them on my kindle, but I put it aside and might use it on a different electronic device if the need arises.
I have heard from someone that some of the colour from this cover rubbed off on their white K3, but I have a graphite K3 and it's skinned anyway, so I don't care if some of the colour rubs off, but if you have an un-skinned white kindle, you might want to be aware of the possibility of some of the colour rubbing off the cover onto your kindle.