Bests & Worsts Reviews from Amazon

Bought this ball for my pregnant wife. Our doctor strongly recommends these for anyone planning a vaginal birth (can I use that word on an Amazon review?!) to increase flexibility and reduce the chances of tearing. She loves it even though she says it makes her groin sore, but I think thats the whole point. This got delivered when I was away on a business trip, so I was happy to hear she got it assembled without issue and found the pump easy to operate. If you are trying to pick the size for your ball, common sizing recommendations are: 4'11" to 5'4" height: 55 cm ball 5'4" to 5'11" height: 65 cm ball 5'11" to 6' 7" height: 75 cm ball My wife is 5'2" and the 55cm height was spot on for proper exercise. If you are planning to use this as a chair, especially at your desk, you should get one size higher. I could also see older people that don't want to exercise at a low squat would also need one size higher than the above sizing.