Provox Luna is an innovative night-time solution for people who have had their voice box removed and need to restore lost airway humidification due to breathing through a tracheostoma. Provox Luna is comfortable to sleep with, prevents skin irritation and provides superior lung protection. To support the important night-time usage, the heat and moisture exchanger (HME) is made of soft silicone for maximal comfort, and the adhesive is made of hydrogel for soothing of the skin.