Gateway is known for putter feel, and its plastics reflect that. SureGrip is the baseline putter line behind the firmness grades: Firm, SS, SSS, and SSSS are all SureGrip at different flex, from stiff to collapsing.
The premium side is Diamond, a translucent TPU blend, and Hyper Diamond, its more opaque, grippier line. NXT is the nylon-based durability blend, Platinum the recycled one, Superglow the glow. HD and Hyper Diamond are listed separately for now because a disc carries the short name; they’re the same plastic.
