ISUP Platin Series River SUP. The Inflatable Platin River Sup is built to explore heavy current waters. The new 3L MFT Platin technology is super rigid. The wide outline and tail gives stability. The added rockerline helps to control the board in waves. To keep the board working really well we added 4 flexible removable Air 7 Clickfins. 3L MFT Platin technology is a premium drop stitch quality that guarantees max. performance regarding weight and stiffness ratio. The standard equipment includes a comfortable wheeled backpack, premium double action 2 cylinder pump.