The Zowie FK shapes were so good they've inspired some of the top mice even in 2019. They're mainly made for fingertip grip but they have almost everything right design wise. The only things I would change are the length (needs to be shorter) and deeper curves in the buttons. There's a reason they're still a favourite among so many FPS players. They're a little outdated these days but they're still fun to use. Still waiting on Zowie to refresh them. Although that said, the Zowie S series is basically the improved FK made for right hand users, so there's no real need either. I'm listing this mouse as 5 button even though there are buttons on both sides, because you can only have one side activated at a time.
|Grip Width||5.75cm | 2.26 inches|
|Hump Width||5.85cm | 2.3 inches|
|Length||12.8cm | 5.04 inches|
|Height||3.74cm | 1.47 inches|