Liner: Technical fabric, synthetic suede liner with real leather trim, is fully removable, washable, and treated to be odor and bacteria resistant.
Head Shape: Long oval.
DOT certified.
For proper fit and size measure the circumference of your head 1" above your eyebrows and around the largest portion of the back of your head.
20.8" - 21.3" ---------- X-Small
21.6" - 22.0" ---------- Small
22.4" - 22.8" ---------- Medium
23.2" - 23.6" ---------- Large
24.0" - 24.4" ---------- X-Large
24.8" - 25.2" ---------- XX-Large
25.6" - 26.0" ---------- XXX-Large
26.3" - 26.7" ---------- XXXX-Large