Wilson NXT Power reel 660ft/200m

NXT Power features high crystallinity Xycro Micro Fibers bonded with polyurethane for an ideal combination of durability and explosive power upon contact. Originally labeled NXT Tour, this string's softness and comfort are about as close as it comes to natural gut. NXT Power features a 15% larger sweet spot and 80% less vibration than traditional synthetic gut string

• 16G/1.30mm
• 45% PU by volume 
• High crystallinity Xycro Micro Fibers
• Ribbon-like co-polymer core increases tensile strength and reduces tension loss
• 15% larger sweet spot and 80% less vibration than traditional synthetic gut string
• #1 rated comfort string by USRSA