Stretchy Design: Can be stretched or pressed at will, good flexibility, stretch resistance, twist resistance, packing resistance and compression resistance, no need to worry about tears. Environmentally Friendly Material: Made of environmentally friendly rubber, non-toxic and tasteless, filled with sand inside, the sound of pressure makes you feel comfortable and the soft feeling will bring you a unique tactile experience. Relieve Stress: Release bad emotions by pressing, focus, release some pressure in the brain and improve work efficiency. Finger Coordination Training: It can train flexibility, coordination, sensory ability of fingers, brain's ability to control the thought of fingers and cultivate cognitive awareness of children. Great Gift: Realistic green headed monster design, environmentally friendly and healthy, a hobby toy that adults and children love, it is a perfect gift for parents and friends.