Wilson makes some impressive durability tweaks to their natural gut. The result is a slightly firmer feel, but make no mistake, this string offers truly outstanding comfort. This high quality natural gut uses only top quality beef serosa to produce a consistent and responsive string. It also delivers easy power along with better tension maintenance than any synthetic string on the market. If you are looking for ultimate feel and arm-safety, this is the perfect string. Strung as a full bed, this Wilson Natural Gut offers truly luxurious comfort. It will also add power and comfort to any hybrid.