These hand exercises for grip strength are used in physical and occupational therapy to restore hand mobility. Perfect for those with rheumatoid arthritis, carpal tunnel, tendonitis, tennis elbow, or those who recover after a surgery or a stroke. Great quality: the squeeze balls for hand therapy are made from a premium composite silicone material with a lightly textured exterior, provides a secure surface for gripping. These squishy therapy balls will retain their shape for extensive use. Anxiety relief items: these balls will be an amazing gift for any adults or children who need to strengthen their hands or those with arthritic, carpal tunnel and rehabilitation needs. The hand exercise balls for adults will be useful for everybody.