These awesome magic slider cards will "wow" your friends and family. When closed, you see a black and white graphic. When the tab is pulled, the slider moves to reveal the colored graphic beneath. You'll need printable transparencies to make these cards. You'll also want watch Lori's "Magic Slider Card" assembly video below to learn how to assemble these cute cards! The finished card measures 3.5x4.75 when complete. Note: I recommend printing the transparency film piece and hand cutting for simplicity. PDF for printable pieces included. I used 100# White Cardstock and this Canon Printer (handles heavy cardstock beautifully).