juvenile, juniors, and seniors. Schoolboys (boys ages 14–15; or age 13 with a medical certificate and parental authorization) wrestle in 10 weight classes ranging from . Cadets (young boys ages 16–17; or age 15 with a medical certificate and parental authorization) wrestle in 10 weight classes ranging from . Juniors (young boys ages 18 to 20; or age 17 with a medical certificate and parental authorization) wrestle in eight weight classes ranging from . Seniors (men ages 20 and up) wrestle in seven weight classes ranging from . For men, there is also a special category for some freestyle competitions, "Veterans", for men ages 35 and older, presumably featuring the same weight classes as seniors. Also, all of the men's age categories and weight classes can be applied to Greco-Roman wrestling. Women currently compete in freestyle wrestling in one of four age categories on an international level: schoolgirls, cadets, juniors, and seniors. Schoolgirls (young women ages 14–15; or age 13 with a medical certificate and parental authorization) wrestle in 10 weight classes ranging from . Cadets (young women ages 16–17; or age 15 with a medical certificate and parental authorization) wrestle in 10 weight classes ranging from . Juniors (young women ages 18 to 20; or age 17 with a medical certificate and parental authorization) wrestle in eight weight classes ranging from . Seniors (women ages 20 and up) wrestle in seven weight classes ranging from . Wrestlers after weigh-in may only wrestle in their own weight class. Wrestlers in the senior age category may wrestle up a weight class except for the heavyweight division (which starts at a weight more than for the men and more than for the women). Different nations may have different weight classes and different age categories for their levels of freestyle competition. Layout of the mat The match takes place on a thick rubber mat that is shock-absorbing to ensure safety. For the Olympic Games, all World Championships, and World Cups, the mat has to be new. The main wrestling area has a nine-meter diameter and is surrounded by a border of the same thickness known as the protection area. Inside the nine meter in diameter circle is a red band of one meter (3 ft 3 in) in width that is on the outer edge of the circle and is known as the red zone. The red zone is used to help indicate