GelTabz Performance Thumb Gripz review. http://www.ClassicGameRoom.com Shop CGR shirts & mugs! http://www.CGRstore.com GelTabz Performance Thumb Gripz review. Classic Game Room presents a CGR Undertow review of the Back To The Future ReAction figures from Funko. Have you worn down your analog sticks to shiny, slippery nubs? Do your thumbs slide off your controller in the heat of battle? Do you need a little more grip in your game? Check out the GelTabz Performance Thumb Gripz! These simple gel covers wrap around the top of your analog sticks and provide vastly improved handling and grip. Each pack comes with four grips—two black and two blue. The GelTabz Performance Thumb Gripz will work with several consoles, including the PlayStation 3, Xbox 360, PlayStation 4 and Xbox One. This video review features video footage of the GelTabz Performance Thumb Gripz and audio commentary from Classic Game Room's Derek.