Features： 1、Exercise with these massage balls can help you increase blood flow and tissue hydration, reduce nodules and tightness. 2、Relieve muscle pain, improve athletic performance, improve sore muscles, increase flexibility and greater range of motion. 3、Suitable size, the length of the rope can be adjusted, not easy to fall when pinched, bring you convenience. 4、Hollow soft ball, lighter than ordinary massage ball, better holding feeling. Can be used on hands, feet, neck and other parts. 5、Adopts high quality TPR material, safe and eco?friendly, odorless and durable. 2pcs of ball are available for use. Specification： Item Type: Finger Exercise Ball Material: TPR Diameter: Approx. 6cm / 2.4in Rope Length: Approx. 15cm / 5.9in Hardness: Hollow soft ball Product Features: Exercise ball is a kind of fitness ball. It is made of durable, high-elastic materials, which is flexible and suitable for all ages Can exercise hand muscles and fingers flexibility, suitable for primary strength training and rehabilitation training. Features: Combination of training ball with and without rope, hands and other parts can be practiced at the same time. Usage: Basic exercises: hold the exercise ball completely in the palms of your palm, and do ten hand stretching exercises, first doing right hand exercises and then left hand exercises, alternate exercises. For People: Rock climbers and bodybuilders trains finger and hand strength; lovers of badminton, table tennis, basketball and other ball sports; Learn to play the piano and exercise finger strength; For people who use computer keyboards and mouse operations for a long time. Package List： 1 x Finger Exercise Ball 1 x Finger Exercise Ball with Lanyard