[500 piece puzzle for adults]: Finished size: 20.5 x 15 inches. The packing box is sturdy and exquisite with a high-resolution poster to provide reference. Puzzle for Adults 1000 Pieces [High-Quality Materials]: Our 500-piece adult puzzles are made from recyclable three-layer cardboard with non-toxic ink, ensuring durability and longevity. The sturdy pieces resist bending and fading, allowing for repeated use. Precisely cut for a snug fit, these puzzles feature high-resolution images, a matte finish, and smooth edges. [Letters mark on the back]: The back of the floral art jigsaw puzzle is divided into sections marked with letters like "A" to "H," making it easier for adults to complete the challenging puzzle.If you find any missing piece, please contact us.We will provide a solution as soon as possible [Relaxation and Stress Reduction]: Our 500-piece jigsaw puzzles provide a soothing and therapeutic experience, helping you concentrate and take a break from daily stresses. They are perfect for unwinding, relaxing, and enjoying some quiet time alone or with friends! [THE PERFECT GIFT FOR ADULTS] - Our puzzle showcases original artwork and unique prints that become beautiful home decor when completed. Our adult puzzles are ideal gifts for occasions like anniversaries, graduations, birthdays, Valentine's Day, Mother's Day, Father's Day, Christmas, Easter, New Year's Day, Halloween, or Thanksgiving. 【Size】Contains 500 pieces puzzle and a poster. Finished size: 21" x 15". 【Choice as Gift】Good choice for Birthday and Christmas gifts. 【Premium Quality】Made of quality material and suppressed by multi-layer - non-toxic and durable. 【Close Conjunction】Every piece fits together perfectly. You can frame the puzzles as a home decoration after finished. 【Intellectual Game】These puzzles helps to tap into our creativity and rewire our brains to make "connections".