We manufacture our strings with the tour level player in mind. An optimum blend of power, feel, control, and durability has typically been elusive as enhancing one characteristic can mean sacrificing another. We use a proprietary extrusion process of blended polymers to maximize recoil properties (power) while maintaining softness to enhance control and feel. Molecules in the string are aligned in a single direction creating an interlocked mesh. This provides superior strength and durability. Strings can lose their "memory" after being under tension for a period of time creating a "dead" feel and loss of power. No string will last forever but Alien brand strings undergo a heat and stretching process that extends the life of our strings and provide superior tension stability.