Polyester, Nylon. Lining: Nylon, Spandex. This workout shorts with soft, comfy and breathable fabricThe fabric is lightweight and feels cool to the touch, not thick or hot fabric.running shorts women with elastic waistband, it is stretchy and comfortable. It has stretchy spandex-ish underwear liner does not rid up and doesnt give you the feeling of granny panties.Dressy but casual sandals combined function with fashion, easy to match with any clothing whatever in summer, fall, winter or spring, whether it is a raining or a sunny day.TPR outsole delivers long-lasting durability on a variety of surfaces.Soft fabric lining ensures an abrasion-free environment for all-day wear.