Premium Multi Layer Anti-Burst PVC
ANTI-BURST: exercise ball uses a 2000 micrometers in thickness and can resist up to 2200 lbs.it adopts a honeycomb stable structure design. These characteristics improve its anti-extrusion ability. Even if it is punctured by a sharp object, it will not burst,it will Deflate slowly.
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.