Condom sizes for newbs
First thing you should understand is that condom size should be determined by your girth.
Anybody below 5” in girth would be fine with a regular sized condom.
Magnums -> 5 - 5.8 inches girth.
Magnum XL -> at or about 6 inches and up.
This is measured from midshaft. Also it could vary, you might need XL’s at 5.5 if you are more comfortable with that size, or regular magnums are interfering with sexual activity. but if you don’t want a busted condom you should definately move up when you are at or about the areas above in girth.
Going for 9