- Mask-in-mask design draws excess gas into vacuum, reducing ambient N2O
 - Clear outer mask shows patient "breathing through nose" (fogging appears in mask)
 - Soft inner mask creates desirable nasal/facial seal and seal can be seen through clear outer mask
 - Low profile expands clinical field of view and provides easier access to the mouth
 - Low profile keeps patients from adjusting mask to see operatory TV monitor and staff activities
 - Single-use minimizes cross-contamination; saves staff time
 - Latex-free material protects patients and staff who have latex allergies
 
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