Isokinetics Inc. Brand Exercise Ball - Anti-Burst - 3 55cm, 65cm, 75cm - Many Colors - For Fitness, Therapy, Sports Training, Yoga and More Made of special, durable latex free material that prevents bursting. Deflates slowly if punctured Weight-tested to support 500 lbs. of static weight Comes with a Bonus inflation measuring tape that takes the guesswork out of inflating to proper size Includes an inflation nozzle, plug and inflation instructions PUMP NOT INCLUDED