This might sound silly, but my husband has such large hands he has a hard time finding pens that work for him. So, I did a little digging and for his birthday I surprised him with the best fountain pen!
I found one called the TWSBI Diamond 580. This company is great, because they take user feedback and experience to create better products. This one is quite a bit larger in size than the average pen so as to accommodate for people with really big hands! My hubby loves the feel and grip of it. It was a little pricey, but he's absolutely worth it.
TWSBI Diamond 580 in red.
Fountain pen dipped in ink.
“... quite a bit larger in size than the average pen...”