Rothco Skull & Crossbones Headwrap. They can be worn on their own or under a helmet. They feature a 100percent cotton material and tie in the back. Specifications for Rothco Skull & Crossbones Headwrap: Manufacturer: Rothco Gender: Unisex Age Group: Adults Color: Black Fabric/Material: 100percent Cotton Cotton Fastener/Closure Type: Ties Features of Rothco Skull & Crossbones Headwrap Material: Cotton Material Specs: 100percent Cotton Weather: All Weather Package Contents: Rothco Skull & Crossbones Headwrap Rothco Skull & Crossbones Headwrap 5134