Yellow Personalized Superhero Can Covers. If you're having a superhero party, you'll definitely need some superhero party favors! Use these yellow can covers during the superhero party and then send one home with each guest. Pre-printed with “Bam!”. Personalize this with 2 lines of 20 characters/spaces per line. Fits a 12 oz. soda can. Foam. (50 pcs. per unit) 4" © OTC"