ARTSKILLS-Peel-N-Stick Foam Letters & Numbers With Sparkly Stickers. You can decorate these foam pieces with stickers or whatever else you want to make your poster stand out. This package contains 228 peel-n-stick pieces on sixteen foam sheets; and 150 sparkly stickers. Individual letters range from approximately 1-1/2" to 2". Conforms to ASTM D 4236. Imported.