Fast and flexible, with a low profile and excellent stability, Viper's low profile provides an unbeatable contact with the substrate. The latest generation (the 5th) of the Salming Viper has a completely new upper, the ViperSKIN â¢, which provides stability and keeps the foot in place. Salming's popular shoe technologies such as RollBar â¢, LMS and LMS Plus 11 ° are also featured on Viper5. In the midsole, Viper5 has new RunLite2 ⢠- a lightweight foam that gives a higher energy reproduction.