Thank you for viewing. The box was opened once to check the contents, but the inner bag is unopened and new. Due to the size of the box, if you prefer shipping only the contents, we can offer a 500 yen discount from the original price. Please let us know in the comments if you would like this option. This 863-piece K'NEX building set allows you to build various models for ages 7 and up. - Brand: K'NEX - Model Name: 863100 - Number of Pieces: 863 - Age Range: 7 years and up - Features: Various buildable models