Marble Genius Marbles Accessory Add-On (60 Pieces) - High-Quality, Compatible with All Marble Genius Marble Run Sets, Made with Durable Materials to Ensure Long-Lasting Fun for Kids and Adults Alike

This accessory set features 60 high-quality glass marbles designed specifically for use with all Marble Genius products. Each marble measures the standard toy size of 5/8 inch to ensure a smooth and consistent glide through various tracks and stunts. The set is crafted from durable materials that can withstand the wear and tear of frequent play, making it ideal for both children and adults. By providing a large quantity of marbles, this add-on allows for more complex racing configurations and simultaneous play without the worry of running out of pieces. It serves as an excellent tool for enhancing STEM learning and developing critical thinking skills through hands-on experimentation.