Featuring a huge sweetspot and an arm-friendly weight, the Ultra 108 v4 arms users with a weapon that builds confidence and dazzles with every swing. Thanks to the new design and new geometry, the racket behaves completely differently than the previous rackets in this series. Highlighted by FORTYFIVE° integration, this frame provides a softer, more comfortable feel along with increased stability, improving easy power delivery for users. Key geometric updates also include an extended Sweet Spot channel at the tip of the rim, which provides additional power and reduced weight for a sleeker and more aerodynamic appearance. Speaking of looks, this racket is second to none: changing colors through the angles of the sun's rays reflecting off the surface of the racket, creating a dazzling effect.Crush Zone - Innovative guide system compresses at impact, providing a longer ball-on-string time, providing improved feel and greater potential energy that fuels explosive power.PARALELL DRILLING- The grommet design provides a consistent, more forgiving string response while significantly increasing the sweet spot.FORTYFIVE°- The frame layout provides better ball feel. The material increases both flexibility and stability without compromise.Sweet Spot Channel - A recess on the side of the frame lengthens the cross strings and increases guide movement for more power.Agiplast - Plant-based grommet components, guides and caps reduce negative environmental impact.