The Attack short is a high wicking performance short with a comfortable fit for weekend riders The SELECT Transfer fabric sets the benchmark for moisture transfer while the Direct-Vent panels provide superior ventilation (UPF 50+sun protection) Pearl Izumis trademark 8-panel anatomic design & flatlock seams offer optimum comfort for short to long rides Silicone leg gripper The pre-shaped & breathable 13mm thick Race 3D Chamois® optimizes riding comfort & athletic performance Reflective elements for low-light visibility 9 inseam [size medium] Main fabrics: 88% nylon 12% spandex (Weight 250 g/m 2) Mesh fabrics: 80% polyester 20% Lycra® Form Fit