To ensure you pick the correct standard cap size, it is recommended that you measure your head circumference accurately at least two times.
Once you know that important measurement, you can use the chart below to determine which cap size will fit you best.
Circumference 20" - 20.5”
Front to Nape 12.5”
Ear to Ear Across Forehead 10.5”
Ear to Ear Over Top 11.5"
Temple to Temple Around Back 13"
Nape of Neck 4"
Circumference 21 - 21.5”
Front to Nape 13.5”
Ear to Ear Across Forehead 11”
Ear to Ear Over Top 12"
Temple to Temple Around Back 14"
Nape of Neck 5"
Circumference 22"- 22.5”
Front to Nape 14.5”
Ear to Ear Across Forehead 11.5”
Ear to Ear Over Top 12.5"
Temple to Temple Around Back 14.5 "
Nape of Neck 5.5”
Circumference 23”- 23.5"
Front to Nape 15.5”
Ear to Ear Across Forehead 12”
Ear to Ear Over Top 13.5"
Temple to Temple Around Back 15.5"
Nape of Neck 6”