The Wilson Ultra 100L tennis racquet features countervail technology for maximum power. 

Product Features

• Lightweight and easily maneuverable from all angles on the court
• Power Rib throat geometry optimizes power through greater stability and stiffness
• Crush Zone grommet system compresses at impact to boost power and ball dwell time on strings
• Hotspot (hottest part of the sweet spot) increases by 15% for more explosive power
• Uncontaminated design features modern aesthetic with clean lines, bold color accents, midnight navy matte finish and smooth, velvety paint

Specifications

• Unstrung Weight: 277g / 9.8oz
• Length: 27in / 69cm
• Head Size: 100 sq. in./ 645 sq. cm.
• Balance: 4 pts head light
• Swingweight: 285
• Stiffness/Flex: 68
• Beam Width: Min: 22.5mm min Max: 26.5mm max
• Composition: Graphite
• Power Level: Low-Medium
• Swing Speed: Moderate-Fast
• String Pattern: 16/19
• How to String: Head = Skip 8 Throat = Skip 8
• String Tension: 50 lbs - 60 lbs