This Toddler Race Track Is A Simple And Well-Built Child Safe Toy. Made Of High-Quality Wood And Stained With Water-Based Paint. No Concerns About Wheels Falling Off Or Pieces Coming Apart. The Only Piece Need To Be Attached Is The Removable Top Parking Lot, Other No Assembly Needed. Great Stem Educational Learning Toy Teaches About Gravity In A Fun Way Also Helps To Develop Intelligence, Expand Thought, Hand-Eye Coordination Skills, Improve Dexterity, And More. It'S Also A Great Tool For Parent-Child Interaction. Wooden Ramp Race Car Zig Zag Slider Car Track Toy Vehicle Playset For Kids Toddlers