Features: and Made of durable and environmentally friendly plastic material, non-toxic and no smell, safe compatible with children playing to develop fingers and brain.This cube stimulate children's sense of space and improve children's memory and their geometric thinking ability logical relationship.Amazing Gifts:Christmas gifts ,birthday gifts. Best brain teaser, move your fingers and make your brain smarter. It will bring you a lot of fun. Every guys will love it.Decorations: This cube with a hole on it allows you to hang it on bag or anywhere you like.It also the best gift to stuff Christmas Stocking .Improve the hand-eye combination ,the spatial thinking,level overall cognitive skills and the mind compatible with sharp in old age. Package Includes:1 Piece Cube Puzzle Specifications:Material: Plastic Size: Approx. 56x72x20 mm/2.2x2.83x0.79inchesColor: Green,Black note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind becompatible withe you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.