The Polyfibre Cobra is the next generation of string technology. This is the first string to be manufactured from a new type of modified polyethylene. It offers an unprecedented level of comfort, similar to that of a gut string. The string is prestretched, giving maximum tension stability. It has a special rippled surface for more power and spin, as the strain energy generated during the stringing process is released when the ball is hit. The player gets exceptional power while retaining optimum control over the ball. A string for players who want maximum power for minimum striking force, excellent feel and first class arm protection. Gauge: 1,20 / 1,25 / 1,30 mm Stringing: 2 kg higher Material: Polyethylen Surface: Structured

Players immediately notice the high shock-absorbing qualities of this string. Polyfibre Viper provides amazing touch, control and precision with maximum power. Polyfibre engineers have applied the newly developed SMD (Standardized Molecular Distribution) technology and the Corona coating which further enhanced the quality of this string. The string's surface structure provides fantastic spin potential as well as preventing string movement, and the added comfort factor will sustain players through long matches as it is easy on the arm and highly durable. This is a great string for advanced and professional players who like to be in control of their game at all times and extra power when they need it. Gauge:  1,15 / 1,20 / 1,25 / 1,30 mm Stringing: 1 kg softer Material: Olefin-Polymer Surface: Smooth