Brutus Monroe Out of This World 4x4 Clear Stamp Set is part of the Spaced Out Collection. This 4 x 4-inch clear photopolymer stamp set includes 9 pieces featuring two aliens holding the ends of a banner, along with three interchangeable sentiments: "Happy Birthday," "You abducted my heart," and "You are out of this world." Additional images include a cratered moon, stars, a rocket ship, and galaxy motifs. Mix and match the stamps to create playful, out-of-this-world designs for birthdays, encouragement, and everyday celebrations.