Seasons: spring, autumn and winter. When you make the order, you must mark your height and weight, chest size we will check your size and reply you soon. You must check the message after 12 hours. Please choose the size according to the size parameters in the table size, not only choose the size simply.All measurements are in cm with 1-2cm measurment tolerance. Above size chart is of ready jacket. Please select your size carefully. When selecting a size, for example, if the body chest circumference 96cm, please select the jacket with the chest. We will try to help you resolve problems. This item is made of natural cowhide.