Salming Viper SL Men's Royal Blue Rule the court with speed and agility in the Salming Viper SL! As the lighter version of the Viper, the SL supports natural movement on indoor courts. Slide into the air mesh upper to stay cool and calm when the pressure rises. Stay quick and agile under the RunLite2™ midsole. Finish it off with secure traction from the XR110™ rubber outsole, and you'll have all the ingredients to own your opponent! Shoe Technology Upper: Air mesh upper provides maximum breathability and comfort. Tongue construction offers a snug and secure lockdown. Molded TPU heel counter adds stability. Removable EVA insole and RollBar™ increase grip during take-off. Midsole: RunLite2™ midsole provides a responsive lift-off. LMS Torsion unit adds more stability to prevent twisting ankles. Outsole: XR110™ rubber with hexagon pattern provides secure traction.