It uses the structure of the Composit model joined with average padding. It is covered in real leather in the black versions and microfiber in the colored versions. It has excellent “all-around” features and is particularly suited for the average pelvis. The STRATOS model has foamed elastomer padding where the ischial tuberosities and rear rest. The patented features by Selle SMP, such as the completely free central channel, the original eagle-beak nose and the raised rear give these models an interesting aerodynamic touch. In virtue of the combination of light yet comfortable padding with a body of smaller width, Stratos is the ideal solution between the Evolution and Glider models. Suited for people with a narrow or medium-sized pelvis.