Loaded with a massive sweet spot, the Wilson Ultra 108 v4 tennis racquet builds confidence with every swing. This frame features the largest head size of Wilson's racquet franchises and strategically mixes the groundbreaking FORTYFIVE carbon construction into the lay-up for enhanced stability and comfort upon contact. Additional upgrades include an expanded Sweet Spot Channel for a power boost, a sleeker geometry for more ergonomic-oriented comfort, and a dazzling design with a matte finish featuring color-shifting blue tones. Racquet Technology Larger head size for generous sweet spot with easy power and added forgiveness FORTYFIVE strategically embedded into the lay-up provides enhanced stability while increasing comfort Revolutionary design integrates beautiful, color-shifting blue tones with a matte finish for captivating look Expanded Sweet Spot Channel features a cavity on the inside of the frame to extend cross strings and increase grommet movement for more power Crush Zone grommet system compresses at impact to boost power and ball dwell time on strings Revised geometry applies a more comfortable, ergonomic design and reduces bulk while maintaining stability Parallel Drilling provides a consistent, more forgiving string bed response Agiplast plant-based bumper, grommet and end cap components reduce environmental footprint