Material: Wooden1 Set 300 Pieces (15"x10.2" Inch), 500 Pieces (20.4"x15" Inch), 1000 Pieces (29.5"x19.7" Inch) puzzles are not an easy task, but it's just a matter of time to solve them. Although challenging, you will win the sense of accomplishment every time you complete a piece. Advantage: Soothe your mind. Relieves pressure at work. Develop hand-eye coordination. Build concentration and creativity. A good choice for teamwork, construction or competition. Develop a closer relationship with family and friends. For adults or kids 14+ ages this challenge and better lead them to be patient while you encounter difficulties. Ideal Gifts Perfect gift for parents, friends, lovers, children on birthday, weddings, christmas, parties etc. After completion, they will have a sense of accomplishment, which is very helpful for their intelligence and self-confidence.