california r Men's Rubber Profile: A remarkably comfortable and light stability running shoe Midsole/Outsole: A GuideGlide dual density construction midsole with superfoam crash pad creates a smooth, maximum cushioned ride. Upper: Seamfree technology heat welded seamless upper for total comfort with external heel counter for stability. ion-mask hydro-phobic nano technology for state-of-the-art water resistance. (ion-maskby P2i) FKS00182