Never Compromise Sub30 Series Putter Features: * Thin faced undercut cavity and ultra thin flange for optimal heel-toe weighting. * Extremely lightweight (67% lighter than our original Gray Matter!) Trans Matter insert allows for maximum weight to be moved to the heel and toe. * The Sub 30 Trans Matter insert provides perfect resiliency for optimum feel. * Features the a distinctive Winn wrap-style grip with our signature black/gray/black design. * Sight lines are configured for optimum alignment on each model.