- Set of 16 invisible ink pens with UV light and superhero notebooks, perfect for children's parties and school gifts - Each set includes a magic pen (batteries included) and a notepad with fun superhero designs (8.5x9.7 cm) - Invisible ink that is only revealed with the pen's ultraviolet light, ideal for writing secret messages and creative games - Four pen colors: red, blue, green, and yellow, all with the same transparent ink - Individually packaged in a zip-lock bag, ready to give as a party favor at birthdays, piñatas, first communions, or school events - Stimulates creativity, imagination, and fine motor skills in children from 3 years old - Ink suitable for paper, cardboard, fabric, and skin, easy to clean with water and soap - Fun and educational resource for activities such as escape rooms, treasure hunts, detective games, and temporary tattoos - Multicolor product, ideal for surprising and entertaining boys and girls at any celebration