● Transparent, non-toxic PVC
● Two diluters, seven concentrations can be adjusted,Green Diluter: 24%, 26%, 28%, 30%,White Diluter: 35%，40% ，50%
● Adjustable Nose-tip
● 5 inch quincuncial anti-crash oxygen tube
| Model | Size |
|---|---|
| A038108 | XL |
| A038208 | L |
| A038308 | M |
| A038408 |
S |
