Features

• Meets ATS air resistance standards
• Features dead volume of less than 70mL
• Pleated media for better functionality
• Compact, non-intimidating design
• Transparent for easy, 100% visual inspection
• Fits most spirometers with no adapter
• Denta-grips™ for a secure hold
• Right-sized oval mouthpiece fits every sized person
• Small, non-threatening size
• Pleated filter media for maximum efficiency