Features: HIGH QUALITY: Climbing pull up ball is made of high quality beech wood and iron, sturdy and durable, not easy to deform, can withstand high-intensity workout, not easy to break. ENHANCED STRENGTH: Pull up arm training ball can enhance the grip strength of fingers, palms, wrists and forearms, increase endurance and explosive power, perfect for building muscle and hand strength, fitness, rock climbing. NON-SLIP DESIGN: The Grip strength training hanging ball features a non-slip design for a comfortable grip, perfect for a variety of arm strengthening exercises. PORTABLE DESIGN: Non slip pull up ball set includes 2 balls, strap and storage bag, compact and lightweight, easy to carry and store, convenient and practical. MULTIFUNCTIONAL: Rock climbing training ball can be used for arm training, pull-ups and other training, suitable for home, gym and so on, help you to fully develop upper body strength. Spec: Item Type: Pull Up Ball Grip Material: Beech Wood, Iron PackageList: 2 x Balls 2 x Straps 1 x Storage Bag