Those who know only "normal" diving and swimming goggles, for which the assembly is already getting used to but not a real problem.
After fitting in the dry, I have already noticed that the glasses with me just do not want to hold on tight. After another test in the cool waters and 30 minutes cruelty was clear to me that I can do no train with these glasses without Reorient.
The design and the quality I really liked, but all this does not help when the glasses do not serve its purpose.