Callaway Speed Regime Duraspin Hex & SR'sgolf balls offer a dual-core, four-piece SR-1 is designed for golfers with swing speeds of less than 90 mph or what Callaway refers to as a “moderate swing speed.” By looking at launch monitor data of golfers with moderate swing speeds, they realized that those golfers won’t see the fast ball speeds of a tour pro and would benefit more with an aerodynamic profile that focuses on increasing the lift of the golf ball to maximize carry distance.
The SR-1 has a thin mantle layer that allows the ball to launch with less spin off the driver, but more spin off the shorter clubs. It also has the softest urethane cover of all of the Speed Regime golf balls.
Another great article to learn more about the Speed Regime golf ball and comparison to some similar brands and models. Highly recommend reading the article by golfwrx.com.
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PLEASE NOTE: This item will contain various year models of Callaway Speed Regime Duraspin Hex & SR's.