Challenge your core with the ETHOS(R) Slam Ball, which features a sturdy yet soft design that offers dead bounce performance for versatile total body training. Maximize Your Workout Adds resistance to a wide range of upper and lower body exercises Helps to improve core strength and explosiveness by engaging your full body throughout throwing motions Great for strength training, flexibility and cardio conditioning workouts Quality Construction Durable rubberized vinyl carcass with sand fill offers dead bounce performance Maintains consistent shape and form for long-lasting use Textured casing improves grip Additional Details Sold as a single item Diameter: 9''