Size Chart

Size Back Chest Neck
00 5.25" 8-9.25" 5.5-6.5"
0 7.25" 9.25-10.25" 5.5-6.75"
1 8" 10.5-12" 6.5-7.5"
2 9.25" 12-14" 7.5-8.75"
3 10.75" 14-16" 8.75-10.5"
4 12.5" 16-18.5" 10.5-12"
5 14" 18.5-20.5" 12-13.5"