Babolat Synthetic Gut 16 660' String Reels An all around performance string, the Babolat Synthetic Gut 16 is constructed by combining a large monofilament central core with a layer of smaller outerwraps. The large core helps to give this string additional durability and solid tension maintenance, while the outerwraps soften the stringbed for better performance and more power... Size - (See Description) | Color - (White) Authorized Babolat Dealer. All racquets are strung and ready for the courts! SEE SELLER DETAILS FOR RETURN POLICY.