The heart-shaped grip strength ball set is designed to enhance your hand and finger strength through regular exercise. Ideal for athletes, musicians, and anyone looking to improve their grip, these balls can be used , in the office, or on the go. Simply squeeze the ball repeatedly to build muscle and increase endurance in your hands and fingers. Features -Color:Red -Material:TPR -Size:6.80X6.00X4.50cm/2.67X2.36X1.77in -Ergonomic design: the heart shaped grip ball is designed to fit comfortably in your hand, ensuring a secure and ergonomic grip during exercises -Strengthens hand muscles: this grip ball effectively targets and strengthens your fingers and hand muscles, enhancing overall hand strength and dexterity -Versatile training: Simply squeeze the ball repeatedly to build muscle and increase endurance in your hands and fingers -Portable and convenient: easy to use anywhere, this grip ball enables you to perform hand exercises , in the office, or on the go -Durable and reliable: made from TPR materials, this grip ball is built to last, providing longterm use and consistent performance Package list: 4 x heart-shaped grip balls