Harbinger HumanX Heavy Duty Balance Disc

Heavy duty 1200-gm balance disc builds core strength through standing, sitting, squatting and kneeling exercises. Training tool in both isometric and plyometric exercise. Exclusive textured surfaces enhance user "feel" and grip on floor while exercising. Moisture proof and wipes down easily. Add air pressure using standard ball pump with needle adaptor. Latex-free and phthalate-free.