crocs Women's Stretch Sole Skimmer Flat, Black/Light Grey, 6 M US. Stretch canvas uppers hug your feet. Articulated Croslite foam insole for cushion and comfort. Crocs Fit2U Technology: the shoe stretches front to back for a great fit. Articulated outsole flexes with the motion of your foot. Rubber pods on toe and heel for better traction and durability.