SDI SofSnug™ Spirometer Nose Clips (29-7964). Proven results. Unsurpassed comfort. And the best price around.
Recommended by The American Thoracic Society, nose clips have been proven to significantly improve PFT test results. The less air that escapes from the nose, the more accurate the result.
- Spring-action design stays secure
- Scratch-free edges for incredible comfort
- Better PFT test results