Razer grip tape for the Viper Ultimate. It makes a difference! : r/razer
Amazon.com: Hotline Games [Grip Upgrade] 2.0 Plus Anti Slip Mouse Grip Tape Compatible with Razer DeathAdder V3 Pro Gaming Mouse Skins,Sweat Resistant,Cut to Fit,Easy to Apply : Video Games
BT.L Hand Made mouse grip tape for Razer DeathAdder V2, DeathAdder Elite, V2 Mini – X-raypad