Outlast - A newly developed, high performance and well rounded co-polyester string designed to provide maximum durability and all-court playability. Utilizes an innovative high-powered co-polyester monofilament fiber designed and shaped to provide exceptional durability and playability.

Pro Stacked - An enhanced, high performance sythetic gut string offering unbeatable all-around playability with added feel and durability. Features a newly developed central power-care encapsulated by high performance, responsive multifibers to offer a versatile combination for all-court play.