High Efficiency one-way valve for easy inhalation and exhalation - Universal Backpiece, can be used with with all commonly prescribed Metered Dose inhalers - Anti-static spacer improves the delivery of MDI by inhibiting the adherence of drug to spacer wall - Soft and flexible silicone mask provides comfortable touch and reliable seal - Portable design & easy holding - Easy disassembled and reassembled for cleaning - Mouthpiece cap can protect the mouthpiece from dirt and debris when the device is not in use - Contains no latex and is BPA-free - Small, medium & large face masks to cater to the different needs - Small face mask: 0 to 18 months - Medium face mask: 12 months to 5 yrs. - Large face mask or mouthpiece: 5+ yrs. - Chamber volume: 175ml - For single patient use only