This stress ball stimulates senses as much as fine motor. Made from sparkly Lycra for added visual stimulation they have an awesome texture and make a great fidget toy. Tough and durable. They are a source of comfort, help reduce stress and improve attention. Hand washable. Use this Manimo Half Moon Ball to evacuate your everyday stress. These stress balls have an awesome texture and make a great fidget toy. Extra tough and durable. The color and texture of this ball will stimulate all your senses, so you can concentrate on a specific task or be attentive during a period of time.