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Keep your kiddos entertained for hours with Blocks: My First All-in-One Box-of-Fun. Imagination is sure to run wild with these colorful building blocks.
Material: Made of ABS plastic, food grade odorless material; smooth edge design without sharpness, no worry about hurting your kid's little hand.
Upgrade Marble Run: Cover 4 kinds of unique big fun track blocks+8 kinds of normal track blocks. It's an upgrade version of the 165 pieces set. 7 interesting models's instruction included.
Intellectual Development: Marble Run Building Blocks inspire creativity and curiosity, enhance imagination, shape recognition and spacial three-dimensional thinking ability. DIY and building your unique set.
Steady Assemble and Smooth: The blocks is smooth-hand feeling, self-locking bricks for assemblage and can stay together smoothly.