From ECCO, the Women's Gruuv Knit Slip On Sneakers feature: Carefully crafted in premium ECCO leather/Knit Smartly designed external loops with elastic for ease of entry and on-the-go adjustment Removable dual-fit, comfort-foam insoles covered in breathable textile. This unique feature allows for a customizable width Cushioning and flexibility with ECCO FLUIDFORM™ Direct Comfort Technology Soft, ultra-light PHORENE™ midsole for bounce and energy return Dynamic two-way flex rubber sole that not only provides you grip but flexible use of your foot at any angle Approx. 1.25" wedge heel Imported