Build new challenges as kids grow with this stepping stone set (3 small, 2 medium, 1 large). Arrange simple stepping paths or advanced obstacle courses to develop balance, coordination, reaction time, and leg strength-while also practicing colors and numbers through active play. Each stone includes a textured, non-slip surface and a durable Tpe edge for stability and floor protection. Made from sturdy, water-resistant Pp, each piece supports up to 177 lbs and cleans easily. Astm and Cpsia compliant and great for kids ages 3+ for indoor or outdoor fun.