The Tubes Run athletic shoes by the K-Swiss brand are made with a combination of breathable mesh and synthetic overlays. There is stripe detailing on the sides. They have full-length cylinders to provide stability, flexibility, and support to the wearer. The padded collar has an Achilles heel notch to add mobility. It has a removable, molded EVA sock liner and textile lining inside. The EVA midsoles help with cushioning and durability. The anatomically correct flex grooves enhance flexibility. The outsole is made of a rubber compound that gives unsurpassed durability.