Elastic closure? NOTICE: Our item’s Tag Size is in Asia Size, we have made a size conversion. Please choose size as your usual wear.? MATERIAL: 93% polyester + 7% spandex.? FEATURES: Elastic waist / loose fit / straight leg / wear-resisting / durable / quick dry / lightweight / breathable / moisture wicking.? FUNCTION: The elastic waist allows you to adjust freely so that you can move comfortably. The length of the shorts can protect the knee.? OCCASIONS: Perfect for outdoor activities like running, gym, hiking, workout, training, traveling, walking, beach or daily life.