Innegra

Innegra is the world's lightest high performance fiber. Its extreme toughness together with Head's advanced carbon composite technology leads to an ultra tough hybrid composite.
This Head Innegra hybrid-composite structure is integrated into the racquet for shock absorption and improved stability. As a result vibrations are reduced by up to 17% on ball impact for improved control and precision -- protecting the player from the forces of a ball impact. On top of this, Head's new hybrid-composite structure with the ultra tough Innegra fiber considerably extends the performance of a Head racquet. With Innegra, racquets remain in perfect condition without losing any performance properties.