Michigan Fishing Umbrella with Top Tilt and Sides Brolly Shelter with FREE Carry Bag, Olive Green, 50", 60", 75" or 86"

How big is the 50" version, I work outdoors so am thinking this would keep me relatively dry in rainy weather?

It the size dimension given for the radius or diameter?

What is the length of the umbrella when it is folded up (the 75inch one) as I am hoping to keep this in my car boot with other things as well

Can you stand up in this please, I was thinking of using it when on football duty watching the grandson through the winter months