This Stress Ball is Made of Premium PU Material with a Sleek Smooth Surface. It Features Soft & Elastic Texture, Comfortable to Grip & Squeeze. the Well-crafted Surface Ensures Durable Use & Nice Hand Feeling. It Works Perfectly for Easing Tension & Calming Nerves in Daily Life. You Can Use It to Relax Hands, Relieve Fatigue & Release Stress Anytime. Ideal for Office, Home, School & Travel Use. It Also Serves as a Practical Promotional Gift & Daily Leisure Toy for All Ages.