| ITEM＃ | DESCRIPTION |
| SY0401 | XL |
| SY0402 | L |
| SY0403 | M |
| SY0404 | S |
| SY0501 | XL |
| SY0502 | L |
| SY0503 | M |
| SY0504 | S |
FEATURES
◆ Made of medical PVC .
◆ Adjustable nose clip.
◆ Six colors diluters， the oxygen concentration is from 24％ to 50％
◆ Available with anti-crush 7ft tubing .
