Easy To Carry:Spacers are lightweight and fiting in pockets Soft Cover:Our spacer made of soft soft silicon comfortable and fit face No Waste:Correct breathespeed help and ensure the air one way flow no waste Hygiene And Safety:Easy to dismantling fot disinfection and clean that ensures the user's hygiene and safety during the inhalation process The NESSI is a spacer intended for use in the inhalation of medications which are provided by OTC MDIs. The device consists of a translucent housing a back piece and mouth piece or face mask.