Airway Collar Sizing Chart
| Size | Measure neck circumference |
| Small | 13.5 - 15.5 inches (34.3 cm - 39.4 cm) |
| Medium | 13.5 - 15.5 inches (34.3 cm - 39.4 cm) |
| Large | 13.5 - 15.5 inches (34.3 cm - 39.4 cm) |
| Size | Measure neck circumference |
| Small | 13.5 - 15.5 inches (34.3 cm - 39.4 cm) |
| Medium | 13.5 - 15.5 inches (34.3 cm - 39.4 cm) |
| Large | 13.5 - 15.5 inches (34.3 cm - 39.4 cm) |