GolfJet is a premium Golf Ball & Accessories manufacturer for progressive minded golfers. Promising tour performance, premium quality and convenience. JET4 Golf Balls are engineered for long carry off the tee suiting golfers with a wide range of swing speeds. The design efficiently transfers lower club head speeds to develop a low spin, arced trajectory flight path, for greater overall distance. Beginning with the Twin Power Core, the coefficient of restitution (COR) is tuned to activate over a wide range of club head speeds at impact. The JET4 efficiently translates energy from the club head at impact for low, mid and mid-high swing speeds (50mph-100mph). Together with a higher launch angle, the JET4 will deliver longer carry off the tee for a wide range of golfers. The homogeneous JET mantle layer creates tri-axial balance, by ensuring the core is spherically concentric, therefore optimising flight stability and spin side reduction. The mantle layer also promotes enhanced approach backspin by translating the axial rotation of the cover at impact. A thin urethane layer is formed over the JET mantle at 300o Celsius. The characteristics of the proprietary composition provides a durable yet soft 'feel' for ultimate control. At impact, across a range of swing speeds, the cover interlocks with grooves on the club face, to amplify spin velocity - up to 13,000rpm. Specifications: Twin Power Core: Low Compression Hybrid Polybutadiene Rubber. JET Mantle Layer: Balanced Homogeneous Low Compression Ethylene Co-Polymer. Cover: Proprietary Cast Urethane Cross Linked Polymer with 332 Hex Aerodynamic Dimple Pattern. Also, download free the GolfJet Connect Smartphone App. Play over 28,000 courses worldwide, keep track of all your golfing stats, experiences and connect with friends.