Size Chart

  Neck Chest Weight
XS 7-9"  11-13" 2-3.5lbs
S 9-10"  13-15" 4-6lbs
M 10-13" 15-17" 6-9lbs
L 13-15" 17-19" 9-12lbs
XL 15-17" 19-23" 13-18lbs