Worf Klingon Star Trek Next Generation Deluxe Full Head Latex Mask Complete your Worf costume with this highly detailed, deluxe full over-the-head latex adult mask. Size: Adult (one size fits most adults) This is an officially licensed Star Trek mask. Materials: Latex, Synthetic Fiber. Latex Caution: Do not wear if you are allergic to Latex. Although rare, allergic reactions to the Latex can occur Care Instructions: Avoid storing or displaying in areas that are very hot, as heat can reduce the longevity of Latex. Storage: Lightly dust inside of mask with talcum powder after wearing.