Saucony Speed Run Visor Sonic Shell: 100% Polyester, Ventlite: 60% Polyester, 40% Nylon Imported DWR-coated fabric provides water resistance, while VENTLITE Mesh inset above brim keeps air flowing Lightweight brim with reflective logo and wicking sweatband keeps you cool, comfortable and visible Stretch back with soft, plush back engineered elastic means a sleek, ergonomic fit