The all new Wilson Natural Gut gets an upgrade in more ways than one.   Now with an even better price and a slightly firmer feel these strings still remain the Rolls Royce of the tennis string market. Although the strings are slightly firmer, don't fret as they are still exceptionally comfortable and perfect for players with arm issues. Made from cow intestines, this string takes significant time and resources to produce, providing players with the utmost in feel and playability. Great by itself or in a hybrid application, Wilson Natural Gut features a moisture resistant, long-life coating to protect your investment.     Composition:  Natural Serosa Fibers Color: Natural Gauge:  16G (1.30 mm), 17G (1.25 mm) Length: 40 ft (12.2 m)   For more information on strings, see our following blog posts: The Future is Hybrids: Top Hybrid String Choices Breaking Down the 4 Main Types of String String and Tension Tips from Tennis Express Stringing Experts   For more information about choosing a tennis string, click here.