NEW Trideer 9 Inch Mini Pilates Ball Color: Blue Turkis Trideer Pilates Ball 9 Inch Core Ball, Small Exercise Ball with Exercise Guide Barre Ball Bender Ball Mini Yoga Ball for Pilates, Yoga, Core Training, Physical Therapy, Balance, Stability, Stretching. Fantastic Exercise Tool Perfect to help improve stability and coordination, maximize strength and endurance, strengthen the core muscles. Improve endurance, flexibility when used in rehabilitation, and toning exercise programs. Recommended by Physical Therapists & Personal Trainers These Pilates balls are extremely popular with physical therapists, and can be used to strengthen your core, sculpt a perfect beach body, and promote blood circulation