Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Dynamax Skull Liner by Seirus Save Liquid error (snippets/product-badge line 32): Computation results in '-Infinity'% $16.99 Black / One Size - $16.99 Color Black Size One Size Availability: Translation missing: en.general.icons.icon_check_circle icon Only 1 left! 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Product Locator by Locally Notify me when back in stock Email address Email me when available Wear as a hat or under helmet. Seirus' exclusive Dynamax - dual density, micro Denier Thermax. Thin, warm, wicking, wind-blocking, stretchy. More stretch. More warmth. More wicking. More wind block. Still thin.