Slide these pieces into place to build your own sensory popper! Follow one of the 40 included design builds or let your imagination run wild on your own creation, then start all over again for hours of sensory enjoyment. Makes a great gift for students and anyone else who could use a hefty dose of creativity, focus and tactile fun! Includes 30 poppers, 5 each of 6 colors, and 20 two-sided design cards (40 puzzles). Read Less...