Two-piece surlyn golf ball that delivers extreme distance, straight ball flight and an ultra soft feel. LONGER DISTANCE A newly designed, high-energy core delivers maximum distance off the tee. STRAIGHTER FLIGHT The two-layer construction reduces spin on longer shots for the straightest ball flight. SOFTER FEEL The DUO franchise continues to offer industry-leading feel as the World's Softest Golf Ball, providing noticeable performance gains around the green.