Asphalt-colored one is made of a little hard material, and it takes some tricks to store them in a crescent-shaped case.
Once it's stowed away, there's no problem carrying it around.
27 years ago, our family started using Tecnisub/Aqualung snorkeling equipment. One mask broke in old age, apparently due to the fatigue caused by changing a pair of glasses. Glasses were changed in order to get lenses suitable for my myopic eyes. The mask broke several years after the last glass change. I bought new, replacement glasses from you a few years ago. The problem with them is that I haven't managed to prevent fogging by any means. The mask has the original glasses. Saliva and Aqualung anti-freeze do not help.
My current mask is my eighth personal mask. I have about 70 years of user experience. This is the first mask where this fogging problem has been unresolved.
The content of the shipment you have now sent has been error-free and the use is in line with our expectations.