The Luxilon Big Banger ALU Power Limited Edition tennis string combines great durability with impressive power and amazing control. The string improves on the first generation line of polyester strings by using a co-poly construction with aluminum. The aluminum present in Big Banger ALU Power is unique to the Luxilon line, giving the string a softer feel and more playability. The co-poly construction of the string helps to retain tension and deliver a new level of elasticity never seen before from a durability string. The Luxilon line of strings has forever changed todays professional tennis. It allows players of all levels to take full cuts, creating generous amounts of spin without a loss of control. ALU Power is best suited to the player that prefers the baseline and takes fast, full swings looking to generate power and spin. The string of choice for players such as David Goffin, and Juan Martin Del Potro.