【Upgrade Marble Run——Sliding Paradise】: 167PCS fun pieces of xylophone and giraffe track blocks set, unlock a hundred new ways to play that kids can create various imaginative masterpieces, make playtime more fun and focused. The detailed instructions will guide kids to build blocks independently..【STEAM Educational Toys】: Building blocks spark child's creative thinking, spatial imagination, and early initiation of architectural design by building up different kinds of graphics and structures. In the process of "playing," it is easier to master knowledge by exploring and discovering their world..【Safe & Odourless】: Marble Runs Toy Blocks are made of Eco-friendly and High-Quality ABS material, which passed the US Safety Certificate. Smooth and burr-free to the touch, Kids can happily DIY building blocks without worrying about hurting little hands..【Assembled firmly & Various Shapes】: BATTOP Marble Run Sets designs reasonable card slots, easy to put together. Multiple play fun game sets can make simple and complex track models, making them fit for kids of different ages. Compatible with All Major Brands Bricks Set..【100 Satisfaction】: All of our products are thoroughly tested before shipped. If it doesn't suit you for any reason, please let we know and we will take care of it in 12 hours!