ANTI-BURST:the ball uses a 2.0mm thick material and adopts a honeycomb stable structure design.prevents the doughnut exploding. HIGH QUALITY MATERIAL : Professional quality with non-toxic PVC material, free of BPA & heavy metals . so it is equally suitable for pregnant women and babies. QUICK & EASY SETUP: Included is a quick, dual action inflation air pump to easily and quickly inflate the balance ball. Your stability ball is delivered deflated and can be pumped up in minutes with minimal effort. VARIETY OF USES:Not only as a ball chair in gym, office, home, kindergarten and classroom.but also great for stability and strength exercise. for Core Traning Balance Training in Gym, Office or Classroom. Warranty - Your 100% satisfaction is our goal.We provide you with 2-year quality Warranty and 30days worry-free money back or replacement. agility ladder reaction ball boxing reflex ball headband exercise ball hockey training hockey goalie bounce boxing reflex ball Donut Exercise, Workout, Core Training, Swiss Stability Ball for Yoga, Pilates and Balance Training in Gym, Office or Classroom