After a week, I can now give details set holidays / snorkeling:
Positives:
+ The silicone used has a high wearing comfort, ie: The mask fits even after long dives enjoyable and not suppressed, the snorkel mouthpiece does not even after long snorkel in your mouth / on the teeth hurt
+ The mask can be adjusted easily for all head sizes
+ The Tempered Glass works great. No fogging and always a clear view in the water
+ The Splash Guard protects against super waves and also promotes water drainage from the snorkel during blow out.
+ The plug on the snorkel can be adjusted in height
+ The mask is also at faster movements in the water 100% leakproof
A great product. Will order me for the next holiday still a 2nd set.