Thames & Kosmos Gecko Run: Marble Run Loop Expansion Pack, Toy Model Kit for Creative Runs, STEM Toys to Foster Problem Solving Skills, Playable Only with Starter Set, Age 8+

ADDS EXCITING LOOP-DE-LOOP STUNT: Introduces a thrilling loop element that challenges kids to design high-speed marble courses. EXPANDS THE STARTER SET EXPERIENCE: Compatible with the Gecko Run Starter Kit, providing new dimensions for creative play. FOSTERS STEM LEARNING AND CRITICAL THINKING: Kids experiment with momentum, gravity, and speed to master the loop. SIMPLE SETUP WITH INSTRUCTION MANUAL: Clear directions and included parts enable quick assembly and immediate fun. SUITABLE FOR AGES 8 AND UP: Combines educational benefits with engaging physical play., Manufacturer: Thames & Kosmos