The BOSU® Weighted Ball Kit 6PK is a versatile addition to any workout, featuring six 4-pound toning balls with a durable vinyl exterior filled with sand. These balls are designed to improve strength, balance, and hand-eye coordination, making them ideal for enhancing overall fitness and muscle recovery. Incorporate the BOSU® Toning Balls into your routine to intensify exercises like squats, sit-ups, and push-ups. Their sturdy design ensures they withstand tough workouts while providing comfort and ease of use. Perfect for adding resistance and variety, they help target specific muscle groups and improve core stability. Ideal for all fitness levels, the BOSU® Weighted Ball Kit offers endless possibilities for dynamic and challenging movements. Whether you're a beginner or an advanced athlete, these toning balls provide a fun and effective way to boost your workout, helping you reach your fitness goals with added intensity and variety.