Amazon.com: BenQ Zowie FK1+ Ambidextrous Gaming Mouse for Esports (Extra Large) : Video Games

No matter whether you are right-handed or left-handed, FK Series are designed for your comfort. The low profile design provides better control for both claw and palm-grip users. FK Series comes in three different sizes.

Select the one that is right for you and wield your mouse firm in grip on the battlefield. FK1+: Extra Large, FK1: Large, FK2: Medium.

Designed for intense gameplay. The Zowie FK allows your fingertips to hold and cover your mouse so you can operate precisely and smoothly.