Generic Marble run for kids ages 6+ 469pcs classic blocks set crazy Marble run building blocks with 5 Balls Race Track, STEM Toys Bricks Set Gifts Toys for Boys & Girls

【Marble Run Sliding building blcok game】469PCS fun Race 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】: 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.