Hard use on Alpencross from Salzburg to Montblanc

Had the envelope on a Alpencross east - west from Salzburg to Mont Blanc, with all odds here:
Sun, snow and rain. The mount is perfect. They also survived a fall unharmed.
What I like best that the holder has a multilayer structure.
The innermost shell can also remain for a protection of the iPhone permanently on phone. Interestingly,
that the corners of the shell not pressed against the metal housing, but is a small gap therebetween.
If the phone should fall on the corner, the corner of the cell phone is not deformed.
Then this bowl is a further silicone sleeve. Then again comes a shell and another Silkonhülle,
which is then embedded in the bracket with a Switch. No better way to protect the phone.
The operation works perfectly up to light rain.
Even with heavy rain, no water has penetrated into the interior.
I had rarely seen a product bought where I am so convinced.