Celebrate the Season with the Cra-Z-Slimy Brand 12 Days of Grinchmas Advent Calendar. Make the countdown to Christmas extra fun with this festive advent calendar inspired by Dr. Seuss's classic holiday tale. Each of the 12 doors reveals a surprise slime compound to stretch, squish, and play with-bringing excitement to every day of the season. Featuring favorite characters like the Grinch, Max, and Cindy Lou Who, this calendar brings the magic of Whoville straight into your home.