The Sunny Health & Fitness Premium Yoga Ball Medium 65CM - SF-EB02-M is designed for individuals 5'9"–6'4" tall and works best with desk heights of 31–32 inches. It’s the perfect tool for enhancing core engagement, posture, and balance while supporting low-impact workouts for all fitness levels. Made from durable PVC, it features anti-burst technology, a non-slip surface, and a 660 LB weight capacity for safe, reliable performance. This versatile ball is ideal for yoga, Pilates, physical therapy, prenatal exercises, and more. It’s also great for balance training, stretching, strength workouts, cardio, or as an active sitting desk chair to promote better posture and core activation. Widely used by physical therapists and trainers, it’s suitable for rehabilitation, prenatal fitness, and advanced training routines. Inflation is easy with the included hand pump and accessories, and the ball comes with detailed instructions for hassle-free setup.