Walk into any underwear store and you'll find several styles that appear similar at first glance. Briefs, trunks and boxer briefs are among the most popular options, but each is designed with a different purpose in mind.

Choosing the right style isn't just about appearance. The best underwear depends on your body type, daily activities, clothing, and the level of support you prefer.

In this guide, we'll explain the differences between briefs, trunks and boxer briefs, their advantages and disadvantages, and how to choose the style that suits your lifestyle.

Quick Answer

Briefs offer the most support with minimal fabric. Trunks provide a balance between support and coverage, making them ideal for everyday wear. Boxer briefs combine extended leg coverage with support, making them popular for men who want added coverage and reduced thigh friction.

There is no single "best" style. The right choice depends on how and where you'll wear them.

Table of Contents

• Understanding the Three Styles
• What Are Briefs?
• What Are Trunks?
• What Are Boxer Briefs?
• Side-by-Side Comparison
• Which Style Is Best for Different Activities?
• Choosing the Right Fit
• Frequently Asked Questions

Understanding the Three Styles

Although all three styles serve the same basic purpose, their construction affects how they fit, move and feel throughout the day.

The biggest differences are:

• Leg length
• Level of support
• Coverage
• Freedom of movement
• Suitability for different clothing

Understanding these differences makes it much easier to build an underwear collection that suits every occasion.

What Are Briefs?

Briefs are one of the most recognisable underwear styles. They provide full front support while leaving the legs uncovered.

Because there's less fabric around the thighs, briefs allow unrestricted movement while offering excellent support.

Benefits of Briefs

• Maximum support
• Minimal fabric
• Excellent freedom of movement
• Less bunching under slim-fit trousers
• Comfortable in warm weather

Best For

• Everyday wear
• Office attire
• Formal clothing
• Men who prefer a supportive fit
• Warm climates

Things to Consider

Men who experience thigh chafing may prefer styles with longer legs for extended walking or running.

What Are Trunks?

Trunks combine the supportive feel of briefs with short legs that provide slightly more coverage.

Many men consider trunks the most versatile underwear style because they work well with almost every outfit and activity.

Benefits of Trunks

• Balanced support
• Modern appearance
• Additional thigh coverage
• Comfortable for everyday use
• Suitable for most body types

Best For

• Daily wear
• Casual clothing
• Jeans
• Travel
• General comfort

If you're buying your first premium underwear, trunks are often a great place to start.

What Are Boxer Briefs?

Boxer briefs extend further down the thigh while maintaining a close, supportive fit.

They combine the support of briefs with the longer leg coverage of boxers.

Benefits of Boxer Briefs

• Extra thigh coverage
• Reduced thigh-on-thigh friction
• Comfortable during long periods of movement
• Secure fit
• Popular for active lifestyles

Best For

• Walking
• Travelling
• Cooler weather
• Men who prefer more coverage
• Casual everyday wear

Side-by-Side Comparison

Which Style Is Best for Different Activities?

Everyday Wear

For everyday comfort, trunks are one of the most versatile choices. They balance support, coverage and freedom of movement, making them suitable for most daily activities.

Briefs are another excellent option if you prefer less fabric and a more supportive feel.

Gym Training

Support should always be the priority during exercise.

Briefs provide secure support for strength training, while many athletes prefer jockstraps for higher-impact activities.

Moisture-wicking fabrics are just as important as the style itself.

Running

Running creates repeated movement that can increase friction.

Boxer briefs offer extra thigh coverage, while supportive briefs paired with performance fabrics are another strong option.

For maximum support, many runners choose sports-specific jockstraps.

Travel

Long flights and road trips call for breathable underwear that remains comfortable over many hours.

Trunks and boxer briefs are both excellent choices depending on your preference for coverage.

Hot Weather

Briefs are often the coolest option because they use less fabric.

Pair them with lightweight, breathable materials to help manage heat and moisture.

Which Style Offers the Best Support?

Support depends more on construction than style alone.

A well-designed pair of trunks may offer better support than poorly made briefs.

Look for features such as:

• Engineered pouch construction
• Quality waistband
• Four-way stretch fabric
• Durable stitching
• Comfortable leg openings

The overall design matters far more than the label.

Does Fabric Matter?

Absolutely.

Even the best style can feel uncomfortable if it's made from the wrong fabric.

For everyday wear, soft cotton blends remain popular.

For sport or warm climates, moisture-wicking performance fabrics help manage perspiration and improve comfort.

The combination of style and fabric usually has a greater impact than either factor on its own.

How Should Your Underwear Fit?

Regardless of style, underwear should:

• Sit comfortably on your waist.
• Stay in place throughout the day.
• Support without squeezing.
• Allow natural movement.
• Avoid bunching or rolling.

If your underwear rides up, leaves deep marks or constantly needs adjusting, it's probably the wrong size or style.

Common Myths

"Briefs are only for older men."

False.

Modern briefs combine contemporary cuts with excellent support, making them popular across all age groups.

"Boxer briefs are always better."

Not necessarily.

They're ideal for some situations, but briefs or trunks may be more comfortable in hot weather or under slim-fitting clothing.

"More fabric means more comfort."

Comfort comes from good design, quality materials and the correct fit, not simply more coverage.

Frequently Asked Questions

Are briefs better than trunks?

Neither is better for everyone. Briefs provide maximum support with minimal fabric, while trunks offer slightly more coverage and versatility.

Are boxer briefs healthier than briefs?

There is no evidence that one style is inherently healthier. The most important factors are choosing breathable fabrics, the correct size and adequate support.

Which style is best for the gym?

Supportive briefs, trunks or sports jockstraps made from moisture-wicking fabrics are all excellent choices depending on your activity.

Which style prevents chafing?

Boxer briefs provide additional thigh coverage that may reduce thigh friction, while supportive pouch underwear helps minimise friction around the anatomy.

Which style is coolest in hot weather?

Briefs generally feel cooler because they use less fabric and allow greater airflow.

Can I own more than one style?

Absolutely.

Many men build a collection that includes briefs for everyday wear, trunks for versatility and boxer briefs or jockstraps for specific activities.

Finding the Right Style for You

There isn't one perfect style for every man or every situation.

Your ideal underwear depends on:

• Your body shape.
• Your daily routine.
• The clothes you wear.
• Your activity level.
• Your preference for support or coverage.

Experimenting with different styles is often the best way to discover what works for you.

Engineered Support at Bulge & Bum

At Bulge & Bum, every style begins with the same goal: creating underwear that works with the male body rather than against it.

Whether you choose briefs, trunks or jockstraps, our focus remains on engineered support, breathable fabrics and thoughtful construction that helps reduce distractions throughout the day.

The right underwear shouldn't just fit. It should support the way you move.

Continue Learning

Explore more guides in the Bulge & Bum Academy:

• The Complete Guide to Men's Underwear (2026 Edition)
• What Is Pouch Underwear? Benefits, Fit & Who Should Wear It
• Why Does Underwear Ride Up? Causes, Fixes & What to Wear Instead
• The Best Men's Underwear for the Gym
  
• How Should Men's Underwear Fit? A Simple Fit Guide

Building a better underwear drawer starts with understanding the differences between each style. Once you know what each design offers, choosing the right pair becomes much simpler.