Squishy foam balls designed to soothe fidgety hands. Large set of Rubbabu Fidget Balls to use as play toys, fidget toys, stress balls, or rehab and therapy products. With 36 pieces that measure 2.5" high, these are great for kids and seniors. The soft natural rubber foam material and nylon surface is squishy and soft. Acrylic case not included. For children ages 2 years and older. All Rubbabu toys are made with carefully chosen ingredients that are safe for babies, toddlers, and infants. The rubber materials are 100% pure rubber from the Hevea tree while the soft surfaces are made with nylon flock from Spain. All materials abide by federal safety guidelines and do not contain harmful or banned substances. The materials can be easily cleaned with a damp cloth. Excellent tactile sensory toy for children.