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Amazon.com : RitFit Weighted Medicine Ball Set - 6LB / 8LB / 10LB, Non-Slip Rubber Shell & Dual Texture Grip - Workout Exercise Ball for Core Strength, Balance Training, Coordination Fitness : Sports & Outdoors
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Reebok Gymball - 65cm Exercise Ball with Dual Textured Non-Slip Surface for Maximum Grip - for Core Workout, Improving Stability, and Posture at Home or The Gym - Pump Included - Black
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