refers to any briefs style male swimsuit such as those worn in competitive swimming and diving. The popularity of the Australian Speedo (est. 1928) brand racing brief has led to the use of its name in some countries (e.g. the United States) to refer to any racing brief, regardless of the maker. Occasionally, the Speedo genericized trademark also applies to square cut swimsuits, but in general the generic term is used in reference to swim briefs. Swim briefs are also referred to as competition briefs, bathers, racer bathers, posing briefs, racing briefs, and colloquially in Australia as "budgie smugglers". Like underwear briefs, swim briefs feature a V-shape front and a solid back providing form-fitting coverage. They typically are worn below the lower waist. They are generally secured by thin banding at the upper thighs and either a drawstring around the waist or an elastic waistband. Swim briefs are most often made of a nylon and spandex (Lycra) composite, while some longer lasting suits are made from polyester and still others from other materials. Most swim briefs have a beige or white front lining made of a similar fabric. Drag suit A drag suit is a pair of baggy squarecut or brief-style trunks that competitive swimmers may wear over their normal suit to provide extra resistance ("drag") from the water. This allows the swimmer to get more out of their training than they would without a drag suit. Drag suits are meant to be worn over a long period of time to wear in the material and possibly tear the fabric. The more worn-in, torn or ripped the drag suit, the more resistance it provides the swimmer. Since drag suits make swimming more difficult, swimmers do not wear drag suits in competition. Drag suits originated as older swimsuits at the end of their useful life that swimmers would then wear over another suit. Kneeskin A kneeskin is a type of competitive swimwear worn by both male and female athletes. Kneeskins are normally made of technologically advanced lycra-based fabrics designed to hug the body tightly and provide increased speed and decreased drag resistance in the water. The kneeskin is similar in design to the full bodyskin absent the leggings beyond the knee. It also resembles a "shortie" style wetsuit only made of drag-reducing fabric instead of neoprene and commonly features a zippered back. Most competitive swimwear brands such as the Speedo LZR