SanDisk SD cases?
Is it possible to buy the SD cases that come with SanDisk Extreme separately somewhere?
I've bought similar cases from eBay, but they are not the same quality. And harder to open and close.
I will recommend you get a proper SD-card case for your memory cards. Photos on a damaged or lost SD-card isn't wort much - only causes regret. I have something like this (shok and waterproof)...
Nikon AF-S Nikkor 16-35mm f/4G ED VR
Nikon AF-S Nikkor 24-70mm f/2.8G ED
Nikon AF-S Nikkor 50mm f/1.8G
Nikon AF-S Nikkor 85mm f/1.8G