How many hours can I wear it per day?
It is recommended a maximum of 4 hours in a row.
How long can it be worn?
If we refer to the number of hours per day, maximum 4 consecutive hours, because later, due to breathing, it can get wet and it no longer protects well. It can be washed at least 5 times.
How much warranty do I have?
Since it is a hygienic product, the return can only be made if the packaging is not opened.