So if you're only roasting once or twice a year, we say skip buying a roasting pan and see if one of these alternatives will work for you instead. The big advantage of a roasting pan is that it's big, literally. A standard roasting pan can fit a 16-pound turkey with no problem. But many of us don't actually need to be roasting a 16-pound turkey, and a smaller turkey will fit quite easily in some of the cookware we already have.
The rule of thumb is that you want to be able to sit on your ball with your legs at a 90-degree angle or slightly more, but not less. Use these guidelines when you buy a fitness ball: If you are 4'11 - 5'4, get a ball that is 55cm. If you are 5'5 - 5'11, get a ball that is 65cm.
For men, the official ball is 29.5 inches (75 cm) in circumference (size 7, or a 295 ball) and weighs 22 oz (623.69 grams). If women are playing, the official basketball size is 28.5 inches (72 cm) in circumference (size 6, or a 285 ball) with a weight of 20 oz (567 grams).