Sorry took so long but I was away and then had to dig it out of my closet and look up info at Lowepro site since I didn't have model number.
The kit I bought at Costco came with a leather case Canon PSC-3200 with a belt loop. However, it is very snug and has no room or pockets for anything else
So I looked around and found a Lowepro water resistant fabric pouch (Ridge 20) that was a perfect fit and had a zippered pocket for extra cards and an expandable 2nd pocket for extra battery, etc. It was only about $10 USD (now on the Lowepro.com website..search for Ridge 20.. sells for $13USD).
I just now took a photo for side by side comparison. The leather was really too snug and I worried when it got wet, it might shrink
Hope this helps. I'm sure there are lot of other candidates but I found the Ridge 20 perfect size and quite small. I usually forgot it was on my belt and a quick unzip and the camera was out and ready in 2 seconds.