Asics Core 4 In Shorts Properties: These shorts are our go-to for everyday runs. They're made of quick-drying fabric for lightweight comfort while running. They also feature a hidden internal phone pocket and mesh side panels for enhanced breathability and freedom of movement. Reflective elements are designed to enhance your visibility when running in low-light conditions. Material : The main fabric of this garment is made from at least 50% recycled fibers to reduce waste and carbon emissions.