Marvel Spiderman Valentines Day Cards for Kids Toddlers -- 32 Marvel Spiderman Valentine Cards (School Classroom Boxed Pack). This boxed Marvel Spider-man Valentine card set features 8 designs with favorite Marvel Spiderman characters. These Valentine cards for girls and boys alike are the perfect handout for Valentines Day parties. 32 Valentines -- enough for most preschool or elementary school classroom. Marvel Spider-man Valentines Day cards for kids and toddlers measure 4.5" x 2.5". Officially licensed Marvel Spiderman Valentines Day cards.