Question 1

I am 5'4". For this particular ball, what would be the recommended size for using it as a desk chair alternative?

Accepted Answer

yes but no, the size is almost right, but you have to overinflated it slightly to get your legs at 90 degree angle. This ball exploded on me, si got are fund and bought one with a much thicker wall. More expensive, but saved me the embarrassing an painful instant drop to the cement floor. I was lucky in the position that I fell, there wer no injuries. The ball I bought that has turned out great is...from Gopher sport. 71-009	UltraFit Anti-Burst Stability Balls - 45 cm (18" dia) Purple. THANKS FOR ASKING !  Item:Individual Ball,Size:45 cm	Ea	$30.95	1	$30.95

Question 2

I am having hard time inflating it using the pump it comes with. Most of the air escapes before it gets into the ball.  Will appreciate any tips!

Accepted Answer

Agreed that the pump is very cheap that comes with it.  It took us some time to inflate it as well.  One person held it on while the other pumped it up and even then, it kept slipping off. We eventually got it, but it did take some time.  If you have an air compressor, that might work a little faster for you.  Just be sure to not over inflate it.

Question 3

How do you know what size to choose?  Weight? Height?

Accepted Answer

It is determined by height. The recommendations are for using the ball for fitness reasons. If you are going to use it for a desk chair (frequent alternate use) then you might need a different size depending on the height of the desk. From what I remember, 66"-72" in your height would be a 65 cm ball. If you are taller or shorter, determine accordingly.

Question 4

I'm 5'7" and the back of my knee is 18" from the floor. What size ball for sitting & core exercise should I buy?

Accepted Answer

I, too, am 5'7" and this is the largest ball they make.  I like it because its NOT low like the other ones where it makes it hard to get on and off.  This is the perfect height for me!  I also purchased the ball "stand" so it would not roll around on the floor.  Happy with both items.

Brand	Body Sport
Material	Acrylonitrile Butadiene Styrene (ABS)
Color	Red (75 cm)
Age Range (Description)	Adult
Item Weight	2 Pounds
Sport	Exercise & Fitness
Item Diameter	75 Centimeters
Number of Items	1
Global Trade Identification Number	00815802010924
UPC	842167060400 842167005104 842167011709 616316177550 815802010924 616316177345
Item Package Dimensions L x W x H	10 x 9.8 x 4.5 inches
Package Weight	1.57 Kilograms
Item Dimensions LxWxH	1 x 1 x 1 inches
Brand Name	Body Sport
Country of Origin	United States
Model Name	Body Sport Exercise Ball
Suggested Users	unisex-adult
Manufacturer	Body Sport
Part Number	BDS10075CM
Style	Red (75 cm)
Included Components	Exercise Ball
Outer Material	Rubber
Size	75cm

Body Sport Exercise Ball with Pump for Home, Gym, Balance, Stability, Pilates, Core Strength, Stretching, Yoga, Fitness Facilities, Desk Chairs

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