Stretch Knit Slip-On W/Air-Cooled Arch Fit-Arch Fit, Machine Washable, Vegan, Stretch Fit, Air-Cooled Step out with miles of supportive comfort in Skechers Arch Fit - Vista View. This slip-on features a stretch knit upper with a removable Arch Fit and Skechers Air-Cooled Memory Foam cushioned comfort insole.