Melissa & doug

Challenging 1,000-piece puzzle: The Melissa & doug knock knock cardboard puzzle is a 1,000-piece puzzle that features dozens of colorful doors. Each piece is distinctly shaped and the puzzle measures 29 x 23 inches when assembled.

Sturdy cardboard construction: The Melissa & doug knock knock puzzle contains 1,000 pieces made of durable cardboard, giving kids 12 and up a greater challenge as they work to assemble it.

Helps develop multiple skills: This 1,000-piece puzzle for kids helps kids develop problem-solving skills, resilience, and confidence.

Great gift for kids 12 and up: The Melissa & Doug Knock Knock Cardboard Jigsaw puzzle makes an exceptional gift for kids ages 12 and up. Add the Melissa & Doug Underwater Oasis Puzzle to round out the hands-on, screen-free experience.

“The gold standard in childhood play”: For more than 30 years, Melissa & Doug has created beautifully designed imagination- and creativity-sparking products that NBC News called “the gold standard in early childhood play.”