Pokémon's 12 Days of Christmas Advent Calendar contains one 300 piece Christmas tree shaped puzzle and eleven 100 piece ornament shaped puzzles. Featuring your favorite Pokémon characters – Pikachu, Bulbasaur, Venusaur, Charmander, Meowth, Charizard, and more! Make your own ornament shaped puzzles, then just peal and stick on the tree puzzle! Includes Bonus Adhesive Puzzle Saver! Preserve Your Puzzle for years to come. Buffalo Games puzzles are manufactured using trademarked "Perfect Snap" technology ensuring a tight interlocking fit between pieces. Puzzles feature a lettered backing to assist with sorting pieces quickly, or you can sort traditionally by the image side for an added level of difficulty!