The Babolat Xcel French Open 17g is one of Babolats premiere multifilament strings. It is composed of very elastic polyamide fibers that provide ultra comfort and improved durability. The Babolat Xcel French Open 17g is coated in a polyurethane resin that further increases the comfortable feel of the strings, and improves durability. Bottom Line: Babolat Xcel French Open 17g is a string that is recommended for players who are seeking comfort primarily, with good durability. It is the closest to natural gut in terms of feel and comfort and is excellent to be used for hybrids.