ZELUS 23 Inch Half Exercise Ball Stability Balance Board with Resistance Bands for Yoga Workouts, Home Gym Fitness Equipment for Men and Women, Half Dome Pilates Yoga Ball Trainer with Foot Air PumpALL AROUND SAFETY: Made from environmentally friendly and non toxic PVC, non slip base & anti skid texture to improve user stability; wear resistant ABS base with 6 slip resistant feet and anti burst technology guarantee safety during use. 30 RESISTANCE BANDS: Two detachable resistance bands with soft foam handles to modify your workout and increase difficulty. You can even attach your different bands when youre ready for increased resistance.