Skechers Slip-Ins Ultra Flex 3.0 Women's Walking Shoes Step into effortless style and comfort with Skechers Slip-Ins Ultra Flex 3.0 Walking Shoes. Designed with an exclusive Heel Pillow. This style features a Stretch Fit engineered knit upper with a jersey trim, plus a cushioned Skechers Air-Cooled Memory Foam insole. Engineered Knit Upper Designed to be lightweight, breathable and durable the Skechers Slip-Ins Ultra Flex Walking Shoes have been constructed with an engineered knit for all-day comfort. The fabric allows cool air to permeate throughout the entire upper to increase ventilation and reduce an uncomfortable heat build-up, creating a perfect environment for your feet to thrive in. Perforations within the fabric increase airflow allowing you to remain cool, dry and comfortable at all times. With a Stretch Fit slip-on design, this walking shoe provides sock-like comfort while a Skechers Heel Pillow holds your foot securely in place. Ultra Flex Midsole