Explore spatial relationships and build manual dexterity with easy catch tactile grid ball The playground-tough Tactile Grid ball play balls have a flexible woven design that gives children endless ways to grab and throw them, ensuring frustration-free play for players of all sizes and ages. Build manual dexterity with this easy to hold and catch Tactile Gridball. The Tactile Grid Ball works well as a manipulative and sensory aid. Tactile Gridball measures 18cm dia. Stimulates sensory functions. Improves hand and eye coordination. Improves dexterity. Provides growth for color recognition.