Exercise balls are inflated to size, not air pressure. A 65 cm ball, when fully inflated, is 25 inches tall. To ensure your ball measures this height after pumping it up, make a reference mark on the wall, 25 inches from the floor. The balls come with an installed plug and an adapter that attaches to most bike pumps. Allow the ball to warm up to room temperature before inflating. Remove the plug, start pumping, stop when it is 4 inches less than its maximum height -- 21 inches -- and then insert the plug. After 24 hours, complete the inflation process. As you pump, check it against your reference mark, stop when it has reached a height of 25 inches and insert the plug.
Once the exercise ball is inflated to the desired size and firmness, it should be used on a clean, carpeted floor or other soft flooring. Make sure to clear the immediate area of obstructions should you lose your balance. Most important, have a ball!
|Hand Inflation Pump, 6" - 30-1047 - Exercise Balls Inflatable And Rolls|