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From personal experience; You can stuff a lot more first-aid things into a container of that type and size.
It's my personal opinion that given what you're using as a container, you could fit a lot more in the kit. The current contents are what I'd expect to find in a smaller pouch.
Well, the kit is actually .5 inches thinner which I corrected.
As for the contents, I looked at several contemporary kits that are closest to that size, currently available and what I have is comparable, with a few items replaced with SARP items.