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Swim briefs

Swim briefs is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Swim briefs rather than just read about it. In short: A swim brief or racing brief is any briefs-style male swimsuit such as those worn in competitive swimming, diving and water polo. The popularity of the Australian Speedo brand racing brief has led to the use of its name in many countries around the world to refer to any racing brief, regardless of the maker.

Swim briefs — main illustration
Swim briefs — illustration

Key takeaways

  • Swim briefs belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Swim briefs to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Swim briefs from memory before moving on to harder problems.

Reference excerpt

A swim brief or racing brief is any briefs-style male swimsuit such as those worn in competitive swimming, diving and water polo. The popularity of the Australian Speedo brand racing brief has led to the use of its name in many countries around the world to refer to any racing brief, regardless of the maker. Occasionally, the speedo genericized trademark is applied to square cut swimsuits, but in general the generic term is used in reference to swimming briefs. Swim briefs are also referred to as competition briefs, swimming trunks, bathers, togs, racer bathers, posing briefs, racing briefs, and colloquially in Australia, New Zealand, and the United Kingdom as budgie smugglers. Like underwear briefs, swim briefs feature a triangular shaped front and a solid back providing form-fitting coverage. They typically are worn below the true waist. They are generally secured by thin banding at the upper thighs, and a drawstring around the waist and/or an elastic waistband. Swim briefs are 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.

Use and popularity

The swim brief was introduced by Speedo in 1956 when Murray Rose wore it at the Summer Olympics in Melbourne and won three gold medals. Swim briefs are worn by professional and recreational athletes in many water sports. They are the standard for competitive diving and water polo. They are preferred in competitive swimming for the reduction of the water's drag on the swimmer, although jammers and bodyskins are sometimes worn instead of the swim brief. Participants in sports that require a wetsuit such as waterskiing, scuba diving, surfing, and wakeboarding often wear swim briefs as an undergarment to the wetsuit. While swim briefs are used worldwide by athletes for water sports, the popularity of swim briefs as casual beachwear and swim wear varies throughout the world. In Continental Europe and South America, briefs are relatively common among male casual swimmers and beach goers. In the United States and the United Kingdom, the roomier and less revealing trunks or board shorts are the suits preferred for recreation, although swim briefs are still seen to some extent. In some swimming pools in France, men are only permitted to wear form-fitting suits and not shorts, purportedly for reasons relating to hygiene. Reasons that swim briefs are chosen for recreation include style, ease of movement in the water, sunshine exposure, quick drying time, and the ability to be worn under pants or shorts. Former Australian prime minister Tony Abbott was a fitness fanatic noted for wearing speedos or "budgie smugglers". Swim briefs are sometimes worn under board shorts for modesty purposes, and they are often used as an athletic supporter under shorts during sporting activities. The swim brief saw increased popularity in 2017-25, with several brands introducing them in their collections.

Styles

Briefs worn for competitive and recreational swimming are manufactured in standard sizes and in waist measurements. They are available in a wide variety of solid colors and patterned designs.

Racing suits

The most common racing suit styles are 1.5 inch to 3 inch paneled briefs (as measured by the height and length of the suit's side panel). The racing suit's main function is to reduce the drag of an athlete in water, thus improving his time. For this reason racing suits are made of materials that hug the body, minimize friction and minimize water retention. Spandex (Lycra) suits generally produce less drag, but are also more vulnerable to prolonged exposure to chlorine than nylon. Therefore, nylon suits are preferred for training and practice, where the increased durability is required for the long periods of usage and the extra resistance brings a training benefit. Lycra suits (and composite hi-tech swimwear fabrics) are preferred for actual racing. In water polo and in diving, suits may have panels greater than 3 inches. Water polo players generally wear racing suits. This is to minimize the fabric available to grabbing and pulling by opponents - actions that are illegal yet often happen underwater - while not compromising the strength of the fabric. High-level players wear specialized suits, usually of a very tight fit and made of thicker, tougher and more slippery fabric, intended to thwart pulling and grabbing during rough play; they often wear two suits, one over the other.

Triathlon swimming briefs A special variety of briefs and trunks made for the triathlon features the racing suit's design for the swimming portion of the race but also incorporates light padding in the crotch of the garment for the bicycle portion of the race. This is a lighter version of the chamois in cycling shorts, to allow running in to be performed more efficiently and the shorts to dry faster after the swim.

Manufacturers In addition to the style's generic trademark term’s namesake company Speedo, competitive briefs-style swimwear are produced by companies including Adidas, Zoggs, Tyr, Dolfin, Arena, Kiefer, Nike, Inc. and aussieBum. Many of these companies have expanded their merchandise to reflect recent trends in water sports. These include the growing popularity of the jammer style and the development of full body suits for competitive swimming. On the fashion end, several designer companies including Nautica, Olaf Benz, Calvin Klein and aussieBum have begun lines of brief style suits in the United States. Most designer brands of male swimwear in Europe, Asia and Australia produce lines of much briefer style suits, including the increasingly popular Brazilian square cut trunks (known as sunga(s) in Portuguese).

References

Illustrations

Swim briefs: A man wearing swim briefs
A man wearing swim briefs
Swim briefs: Water polo player wearing swim briefs.
Water polo player wearing swim briefs.
Swim briefs: Swim briefs are the standard for competitive male divers.
Swim briefs are the standard for competitive male divers.
Swim briefs: Male model wearing swim briefs, 2004.
Male model wearing swim briefs, 2004.
Swim briefs: Comparison of jammer and swim brief types of swim suits.
Comparison of jammer and swim brief types of swim suits.

Worked examples

Example 1 — a first encounter with Swim briefs

Start with the simplest possible case. Write down what Swim briefs claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Swim briefs before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Swim briefs ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Swim briefs

In research
Swim briefs appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Swim briefs in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Swim briefs is common in secondary-school and first-year university syllabi. It links to neighbouring topics Australian clothing, Australian inventions, Swimming equipment, so understanding it makes those chapters shorter.
In everyday life
Look for Swim briefs outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Swim briefs in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Swim briefs means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Swim briefs out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Swim briefs in simple terms?

A swim brief or racing brief is any briefs-style male swimsuit such as those worn in competitive swimming, diving and water polo. The popularity of the Australian Speedo brand racing brief has led to the use of its name in many countries around the world to refer to any racing brief, regardless of…

Why does Swim briefs matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Swim briefs?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Swim briefs.

Tags

  • Australian clothing
  • Australian inventions
  • Swimming equipment
  • Swimsuits
  • Water polo equipment

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