Baidecor Cube Puzzle Keychain 3 Layers Size: 1" x 1" x 1" - Material: ABS Plastics. Non-toxic, lightweight. Lovely small cube puzzle perfect for beginner, fun hanging on your phone or keychain. Challenge your mind with this lovely puzzle cubes, get relaxed when boring or flying. Smooth turning and excellent rotation, perfect educational puzzle games. Easy to carry, give these puzzle cubes away as party favors or prizes to kids.