X-Small - 5.5 in. - 6 in. Small - 6 in. - 7 in. Medium - 7 in. - 7.5 in. Large - 7.5 in. - 8 in. X-Large - 8 in. - 8.5 in. XX-Large - 8.5 in. - 9 in. *(+$2.00) XXX-Large - 9.5 in. - 10 in. *(+$3.00)