Create, squish and discover with this hands-on squishy ball science kit built for curious kids. Using the included materials and full-color instruction booklet, children can make up to ten custom squishy stress balls while learning real science — how mass, density, polymers and viscosity affect texture and behavior. Each experiment mixes sensory play with STEM exploration: colorful beads, glitter and accessories let kids personalize their creations while the step-by-step guide explains the chemistry behind slime, oobleck and non-Newtonian fluids. Perfect for craft time, science class activities, or calming sensory play; adult supervision is recommended for younger children due to small parts and balloon hazards.