The Wilson Ultra 100L v4.0 Tennis Racket is a lightweight performance frame that offers a blend of power and stability. It has a 100 sq in head size, 27 in length, and weighs 11.2 oz. The updated geometry and thinner shaft allow it to move through the air more quickly and smoothly, and feel better in the hands. Reviews note that it is easy to swing, has a large, forgiving sweet spot, and produces good power and "whip" on serves. 
 
Headsize: 100 sq. inches
Length: 27 inches
Composition: Carbon Fiber Graphite
Weight(strung): 10.4 ounces (295g)
Balance: head light
String Pattern: 16×19
Grip Type: Wilson Pro Performance
Strung
Colors: Blue/Purple
 
Grommet construction provides a consistent, more forgiving string bed response while dramatically increasing the sweet spot.
FORTYFIVE: Patent-protected frame layup produces a more connected-to-the-ball feel while better complementing the more modern, vertical swing path. The material increases both flexibility and stability without compromise through the swing.
Plant-based bumper, grommet, and end cap components reduce the environmental footprint.
The innovative grommet system compresses at impact to provide a larger hotspot and increased ball dwell time on the strings, creating a better feel and more potential energy that drives explosive power.