A mask may seem to fit well on the first try but become less comfortable after a few full nights. Mask trial insurance is added to your purchase and covers the period when you test the mask at home, night after night.

This is a useful option when you are wearing a mask for the first time or when you are changing models, because the real test is always done at home, in your bed and in your usual position. The exact conditions of the trial will be specified at the time of purchase.