Exercise Balls are one of today's most popular fitness tools. They are designed to help improve your core strength and stability. They are also ideal for total-body conditioning, since optimum exercise performance is achieved in an unstable environment. They can be used for core stability, rehabilitation exercises, cardiovascular workouts and to strengthen and tone all major muscles in the body. To show its versatility the exercise ball can also be used as a bench for free-weight exercises whilst targeting those hard to reach stabilizer muscles.

Your Height	Ball Height	Ball Size
Up to 4'10" (145cm)	18 inches (45 cm)	Small
4'8" to 5'5" (140-165cm)	22 inches (55 cm)	Medium
5'6" to 6'0" (165-185cm)	26 inches (65 cm)	Large
6'0" to 6'5" (185-195cm)	30 inches (75 cm)	Extra Large
Over 6'5" (195cm)	33 inches (85 cm)	Extra, Extra Large

Classic Balls (lighter loads and basic use)

duraBalls (heavy loads and advanced use)