Superhero Floor Decals. Vinyl. (12 Pack) Peel and stick these on your floor for your superhero theme. They're great birthday party decorations and a fun way to make your classroom decorations super-charged! Add them to a little hero's bedroom dcor to help create a space that's personal and inspiring. Vinyl. Includes 3 sheets with a total of 12 clings. Approx. 10 1/2" x 8" pieces on three 17" x 22" sheets.