core disc
Did you mean: âcore diskâ. 1  Inflated Stability Wobble Cushion, Including Free Pump / Exercise Fitness Core Balance Disc. 2  ProSource Core Balance Disc Trainer, 14â Diameter with Pump for Improving Posture, Fitness, Stability. 3  Abilitations Integrations Inflatable CoreDisks With Squellet Filler - 12 inch.