Good insert for Sony a7r

i'm looking for an insert that I can put in my backpack/drybag for my a7r. I have a few extra lenses/filters/batteri​es that I need to store, but I don't need that to really be in the same bag. Most inserts that are even reviewed are too large for what I'm looking for.

Has anyone else with a mirrorless found a good, small, light insert that they can recommend?

I find these to be nice. it comes in difference sizes. I got the insert thinking I can use it for an accessory bag I have, which works well but I end up just using my shoulder bag.

tenba inserts
http://www.bhphotovide​o.com …36_222_byob_9_c​amera.html

Very cool - I take it you have/use the 9?

Are you saying you don't use it much, or that you use it in your shoulder bag?

Just wanted to update the tread. I got the tenba 9 and it is perfect. I can fit my a7r+connected lens, plus my two other nFD lenses, along with 3 filters, and still have plenty of space left for batteries and misc kit. Love it!