It's very short while folded up -- about 10 3/4 inches.  But rather round at about 3 1/2 inches.  Stubby Compact... but it will take up some room for those hoping to put it in their bag or purse.  I keep mine in a water bottle sleeve on my LowePro photography belt and use it regularly in Big Cypress preserve in South Florida.  If ever there was a test of the sun blocking ability of an umbrella, it's in Big Cypress in the summer months.  This one performs great and is tough enough to be pushed through thick growth from time to time.