Xalt is an entirely new addition to Babolat’s Xcf family of multifilament strings. It’s composed of special polyamide filaments combined with glass beads, which is all covered by a silicone wrapping.

Head expands its multifilament lineup with a power version of its popular Velocity MLT string. Compared to the standard model, the filaments in the outer wrap are thinner and more plentiful. This ...