Yep, those are the same bottles that my company uses for many of our reagents. If we're trusting $300 of conjugated antibody being shipped internationally, I'm pretty sure you can trust it with $3 worth of soup. The only issue with those is that the mouth is kind of narrow. They're tough to fill without a funnel. Other than that, they're (almost*) leakproof and incredibly durable.

*I only say "almost" because as a mfg. engineer I see over 10,000 of these things get filled on a weekly basis and there are a few (< 0.05%) that slip past Nalgene's QA process with malformed threads/caps which leak. I'm sure The Container Store would exchange those free of cost.