The Volkl Vostra V4 bridges the gap between oversize racquets and today's modern frame. This tennis racquet provides excellent feel and control while being easy on the arm. RED CELL material in the hoop and throat of the racquet provides a soft feel at contact. Catapult strings at 3 and 9 o'clock offer easy power, while the open string pattern gives great spin potential. Soft, powerful and easy to swing, the Volkl Vostra V4 is your new secret weapon! Racquet Technology Red Cell: Composite material placed in the hoop and throat of the racquet provides the perfect blend of strength and elasticity for a softer feel at contact with added power. Super Grommet System: provides more control by extending dwell time, increasing the sweet spot and offering more speed from energy return. Precise Power: Beam shape uses a classic beam design combined with a box beam construction to provide that classic Volkl feel while improving power. Revolutionary EVA (REVA): Material gives players a more lively and dynamic racquet. VTex: Silicone polymer butt cap works with V-Cell to increase comfort with every swing. Improves racquet dampening while resisting shrinkage and movement in high temperatures. V-Sensor: EVA molded mass dampener pendulum pin eliminates bad vibrations. Catapult Effect: Accelerates the ball with 30% more power and control, even on off-centered shots. Catapult strings allow for a deeper string-bed pocket upon impact, providing more power.