Babolat-Synthetic Gut 16G Tennis String Reel Yellow-(3324921172040) An all around performance string, the Babolat Synthetic Gut 16 is constructed by combining a large central core (composed of several hundred synthetic microfibers) 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 - (See Description) Authorized Babolat Dealer. All racquets are strung and ready for the courts! SEE SELLER DETAILS FOR RETURN POLICY.