Chin Up Grip Ball Non-slip Fitness Equipment for Bouldering Home Gym Workout 9cm.This is a home fitness pull-up training ball, fit for enhancing your workout routineMade from PU, this Chin Up grip ball is sturdy and designed to withstand workoutsWith a diameter of 7cm/9cm(optional), this training ball is compact and portable, making it easy to carry around and storeEach package comes with 1 pull-up training ballThis fitness tool can be used for various exercises to strengthen arm muscles, back strength, wrist strength and grip strengthGym Hold Grip Non-slip Workout Gadget. pull-up training ball Strength Exerciser Portable. Wrist Grab Bar Heavy-Duty easy to use. Home Chin Up grip ball Finger Lightweight. Hand Grip Ball Fitness Equipment Multifunction. [Versatile Use]: This fitness tool can be used for various exercises to strengthen arm muscles, back strength, wrist strength and grip strength [Home Fitness Training Ball]: This is a home fitness pull-up training ball, fit for enhancing your workout routine [Compact Size]: With a diameter of 7cm/9cm(optional), this training ball is compact and portable, making it easy to carry around and store [Package Includes]: Each package comes with 1 pull-up training ball [Quality Material]: Made from PU, this Chin Up grip ball is sturdy and designed to withstand workouts