Halo Master Chief Costume Vacuform Half-Mask, Green, One Size 100% plastic Halo mask with visor and adjustable head strap Look to rubies for complete halo costumes One size fits most Officially licensed halo product Rubies costume company is a family owned business based in new york with more than 60 years of experience bringing children and adults the costumes and accessories they want to halloween and year-round dress up