The Winn Duratech hybrid grip is an all-weather performance choice that uses multi-material hybrid grip technology in important parts of the grip to deliver excellent feel & performance. Longer-lasting non-slip control comes from the proprietary rubber compound in the upper hand area. In the lower hand you will find performance polymer for more comfortable, tacky & responsive feel. The grip encourages you to hold it with lighter pressure. It is very durable & slip-resistant & is designed to help improve your short game touch. The grip weighs 45g (1.6oz) & has a core size of 1.5cm / 0.6'' (60 Round).