Recently I bought another excellent item from Sony: the LCS-BP2 backpack.
Sony has a very good arsenal of camera bags, and this is a welcome addition.
I use a big backpack to store my gear at home, but it quickly became so heavy that you don't want to carry it on your back... This one instead is reasonably small.
From the pictures, you can see it holds a fully loaded camera, two long lenses and it has a top compartment for flash, batteries, etc. But actually it has one more section which is not visible (between the camera and the top), so you can carry three lenses; simply it's not that easy to open.