One day as the monsters were tunneling underground, they stumbled upon an immense underground vault containing several of the mysterious objects known as the Wubbox. Very little is known of their origin or purpose, save a few observations...Easy Assembly- Experience hassle-free assembly with the singing monsters building set. Included are exquisite paper instructions that guide you through each step, making it a breeze to build. Enjoy the process as you follow the clear instructions and create your masterpiece effortlessly.Cool Wubboox monster figure toy building sets to improve the fine sports skills and common emotional development of your fingers.This product is made of ABS material, so its surface is comfortable to touch and hard enough to connect. The building blocks can also be easily spliced together without any peculiar smell, so you can buy it as a gift to children with confidence.Cool Wubboox monster figure toy building sets to improve the fine sports skills and common emotional development of your fingers. Action figure for Kids: This Wubboox building toys will become a great gift for children over 8 years old. Toy building sets is the ideal solution to keep children engaged for hours in a super fun role-play game.