【THICK & ENVIRONMENTALLY FRIENDLY】: The jigsaw puzzle is mainly made of high quality and environmentally friendly paperboard. 100% recycled, non-toxic, sturdy, and durable Cardboard. Top quality grey cardboards to make every piece 2mm THICK and NOT LAYERED, High precision cutting and occlusion.【BEHIND LETTERS PARTITION & A POSTER】: A high definition POSTER(42cm * 28.5cm) is included in the puzzle box. The letters behind each puzzle piece to help you work better.【SPECIFICS】: Includes 1000 large puzzle pieces made of sturdy chipboard on recycled paper. Completed puzzle dimensions: 27.6" * 19.7" (70cm*50cm). Package size: 9.05" x 2.36" x 7.48" (23cm*6cm*19cm).【APPLICATIONS】: Enjoy your time with the adult puzzles. Challenging 1000pcs puzzle for adults and teens. Use the puzzle as a home decor as well with the delicate design. Perfect gift for you and your friends.【QUALITY ASSURANCE】: If you have any question about product quality and instruction, please contact us and we will solve it for you within 24 hours. Lifetime free lost piece replacement.