| Standard Cap Size | Small Size | Medium Size-1 | Medium Size-2 | Large Size | Extra Large Size |
| Circumference | 21.5/21.75" | 22/22.25" | 22.5" | 22.75" | 23/23.5/24" |
| Front to Nape | 14" | 14.5" | 14.5" | 14.5" | 15" |
| Ear to Ear across forehead | 12" | 12.5" | 12.5" | 13" | 13" |
| Ear to Ear across top | 12.5" | 12.75" | 13" | 13" | 13.5" |
| Temple to Temple | 14.5" | 15" | 15.5" | 15.5" | 16" |
| Nape of Neck | 5" | 5" | 6" | 6" | 6" |
