Exercise balls come in a variety of shapes, sizes and weights designed for different exercises targeting the arms, shoulders, back, abdominals & core, and legs. Stability balls are large and lightweight, commonly used for abdominal and core exercises like crunches and reverse crunches. Weight balls are weighted and used in a variety of ways throughout your workout to strengthen arms, shoulders, legs, and the core. Some weighted sculpting balls are small enough to fit in the palm of your hand, offering the same benefits of basic free weights. Enhance your at-home workout with stability and toning balls from great brands like The Firm, Everlast, Stott Pilates and more.