The Gaiam Restore Hand Therapy Kit includes three different strength levels of hand therapy balls designed to provide relief and support for individuals with arthritis or stress. Made of rubber and featuring a multicolor design, these gripper balls are easy to use and offer a soft to medium firmness for gentle exercise. The kit is suitable for unisex adults and can be used for gym training or fitness activities. With the Gaiam brand known for quality products, this hand therapy kit is a great tool for individuals looking to improve their hand strength and alleviate stress.