One strange thing is that my Callaway ubrella seem to lack the circular cutouts seen in this picture, though the ubrella looks exactly like that:
http://www.golforderonline.com/upload/prod...-05-14-15_b.jpgPerhaps the cutouts help the wind handling...
and as I wrote in a PM to bankergolfer:
I guess the ubrellas could be all the same, I never got to use the Ping at the golf course since I returned it due to carbon fibres sticking out. And I got the Callaway instead. But there wasn't any difference in construction or quality, I just stood at the shop and went through 5 umbrellas and took the one where looking best. Where they seem to fail in quality is when they stance or pierce through the carbon fibre rod to make holes for the locking mechanism, some of the ubrellas were nice, but some had just terrible holes with many carbon fibres sticking out, and those hurt when you get them in your fingers!
I hope that my callaway ubrella will handle the wind better when it gets worn, now the fabric is so hard strung on the frame that the wind doesn't seem to slip trough as good as you want it to.
The Ping handle is larger than the Callaway. For my cart Big Max they make two ubrella holders, normal and large. I bought the large for the ping but the normal for the Cal.. The callaway is really thin, but good. It's like a golf grip but only a little thinner. I think it will fit within 4 cm.