DuPont introduced lycra (DuPont's name for spandex) in the same decade. Wrestlers may also wear spandex or athletic shorts. They will typically wear compression shorts or spandex underneath. Fibers invented between 1930 and 1970 include nylon, PTFE, polyester, Spandex, and Kevlar. Manufacturers also experimented with rayon and newer fabrics like Dacron, nylon, and Spandex. "Zentai" is most commonly made using nylon/spandex blends. It may be made from rubber, latex, PVC, spandex, darlexx or leather. Bamboo yarn can also be blended with other textile fibres such as hemp or spandex. There are also fursuits made of other materials, such as spandex or latex. Pantyhose fetishism can be viewed as a class of spandex fetishism. This polymer is primarily used to make elastomeric polyurethane fibers like Spandex. The alien spacesuit costumes were made of red spandex. It is frequently enhanced by lavish costumes, ribbons or spandex body suits. These include, but are not limited to, spandex, and wool. During the Apollo era, astronauts used urine and fecal containment systems worn under spandex trunks.