Often overlooked due to it's cost, natural gut is the best choice for players with arm problems or those who simply want the best. Polyester strings also experience rapid initial tension loss. Players switching from a nylon or synthetic gut string should increase tension 3-5 pounds. Kevlar - The most durable string available. Kevlar is very stiff and strings up very tight.
Main benefits are tension maintenance and crisp feel.
Quality of nylon center core, as well as size and orientation of outer wraps can influence feel and comfort. Provides additional durability and cushioning. Gamma Gut 2, Gamma TNT Pro Plus. Bundles of micro synthetic fibers are twisted together, similar to natural gut. Nylon multifilaments are typically more comfortable than solid core strings due to the cushioning effect of hundreds or even thousands of micro fibers.