Merrithew Stability Ball

Challenge the deepest stabilizing muscles in your body while exercising on the unstable base of this Stability Ball. Designed to improve balance and strength as well as tone your body, this Stability Ball is also used by Pilates enthusiasts as an office chair. Safety tested under 250kg of pressure. The Stability Ball ranges in size: 65cm , 55cm and 75cm . Sold individually, this Stability Ball is ideal for those under 170 - 185cm tall. Note: For full inflation inflate ball, allow to rest for 2 days, and then complete inflation to ensure that ball is the proper size.