During hot weather, cases exposed to direct sunlight suffer seemingly inexplicable increases of relative humidity within the case, which can sometimes double in the space of only 20-30 minutes (!), stressing the instrument greatly. It is not uncommon to find that in the long term this can breed mildew within the case or instrument.
Musafia PressurePortsTM release excess pressure in these conditions and stabilizes relative humidity levels. Standard on all Enigma* cases and optional on all other Musafia Cremona Italy models. This option is perfectly compatible with all other Musafia options, and does not allow water to enter the case.