Crafted From High-quality Polyurethane Foam, This Uniquely Shape Stress Reliever Offers a Superior & Satisfying Squeezing Experience. the Material is Soft to the Touch Yet Remarkably Durable, & Bounces Back to Its Original Shape After Repeated Use. It Provides Just the Right Amount of Resistance, Delivering a Comfortable Tactile Sensation That Effectively Helps Melt Away Tension & Stress. This Versatile Tool is Perfect for Discreet Stress Relief During Office Hours, Focused Hand Grip Strengthening Exercises, or for Casual Fidgeting at Home. Its Functional Design Makes It an Ideal Desk Top Companion for Improving Mindfulness & Muscle Tone Simultaneously.