Anti-burst Fitness Exercise Stability Yoga Ball / Swiss, Birthing, gym Ball Exercise ball is crafted from professional grade, anti-burst, Phthalate free, green, eco friendly materials. Textured non slip material ensures safety when being used as a birthing ball, or ball chair See product description for sizing guidelines. Swiss ball promotes core stability, strengthens muscle tone, improves balance and body posture. Stability ball provides ergonomic seating, relieves back pain and shoulder aches. Gym ball set includes convenient foot pump, and fitness ball user's guide. All Bintiva brand products come with a manufacturer's warranty. Yoga ball Birthing ball Ball chair Physical therapy occupational therapy