D30 Impact Gel Case and Body Glove Hybrid 2 Gel Case for LG G2

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Has anyone tried these or similar Gel packs?

Body Glove Silver Icon Hybrid 2 gel/shell pack - LG G2
LG G2 D3O Impact Shell - Smoke | T-Mobile


Are these actually those famous gel material that hardens on impact but soft when relaxed? The orange one has a strip of that type of gel on the inside.

I also like this:
LG G2 D3O Impact Snap Case with Cover - Black | T-Mobile

Edit: Yep D30 is that famous gel material:

How does the D30 in Armadillo jackets work - YouTube

 

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Nobody?