Tiger Shark Ultra-Tac Jumbo Putter Grip, Red Extensive player testing revealed the average golfer saves 3.7 putts per round when they use the jumbo grip as compared to a conventional size grip. The legendary Tigershark Jumbo Putter Grip features Winn AVS Technology. Material: Proprietary Ultra-Tac Polymer that is firmer and more durable than traditional grips. Core Size: Men's Standard 60 Core. Available Colors: Blue, Green, Yellow, Orange, Red.