Size Chart
MEASUREMENT A – NECK HEIGHT
Infant
1.25" (3.2 cm)
Pediatric
1.75" (4.4 cm)
Adult
2.25" (5.7 cm)
MEASUREMENT B – NECK CIRCUMFERENCE
Size
Infant
Pediatric
Adult Small
Adult Medium
Adult Large
Adult Extra Large
3.25" (8.3 cm)
4.25" (10.8 cm)
Circumference
6"–8" (15.2–20.3 cm)
8"–11" (20.3–27.9 cm)
10"–13" (25.4–33.0 cm)
13"–16" (33.0–40.6 cm)
16"–19" (40.6–48.3 cm)
19"+ (48.3 cm+)
5.25" (13.3 cm)
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