Valeo 9-inch Core Training Ball for Barre, Pilates, Core Training, Improves Core Strength, Balance, and Strength, VA4448BL 9 INCH MULTI-USE EXERCISE BALL: Perfect for yoga, Pilates, barre, physical therapy or fitness exercises that focus on strengthening your core, posture, balance, toning and sculpting muscles STRENGTHEN CORE: Perfect to improve stability and coordination, maximize strength and endurance, strengthen the core muscles VERSATILE: Exercise tool to improve balance, flexibility, posture, core strength, and improves muscle tone VERSATILE: Exercise tool to improve balance, flexibility, posture, core strength, and improves muscle ton 9" latex-free ball Helps build core strength Enhances pilates routine Increases flexibility and muscle tone