C rumb Cake Card Bases: 3" x 6" Pool Party Card Layer: 2 5/8" x 2 5/8" Crumb Cake Card Layers: 1" x 2 5/8" Pool Party Card Layers: 1 5/8" x 1 5/8" Whisper White Card Layer: 1 3/16" x 1 3/16"