If you've ever shopped for men's swimwear, you've probably come across two terms that are often used interchangeably: swim trunks and board shorts.
While both are designed for time in and around the water, they were originally created for very different purposes. Understanding the differences can help you choose the right option for your next beach vacation, pool day, resort stay, or water activity.
For many modern travelers, the decision comes down to comfort, versatility, and personal style.
So what's the difference between swim trunks and board shorts—and which one should you choose?
What Are Swim Trunks?
Swim trunks are the most common type of men's swimwear.
They are designed to provide comfort both in and out of the water and are typically worn for:
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Beach days
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Resort vacations
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Pool parties
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Cruises
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Tropical travel
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Casual swimming
Modern swim trunks usually feature:
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Elastic waistbands
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Drawstring adjustments
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Quick-dry fabric
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Compression or mesh liners
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Side pockets
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Shorter inseams
Because they are built for versatility, swim trunks transition easily from swimming to walking, dining, sightseeing, and relaxing.
This makes them particularly popular among vacation travelers.
What Are Board Shorts?
Board shorts were originally designed for surfers.
Their purpose was performance rather than casual comfort.
Traditional board shorts typically feature:
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Longer inseams
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No liner
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Flat waistband
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Lace-up front closure
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Lightweight construction
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Extra mobility for surfing
Because surfers spend extended periods lying on a surfboard, board shorts were designed to reduce irritation and improve movement during wave riding.
Over time, board shorts became a popular beachwear style beyond the surfing community.
The Biggest Difference: Purpose
The easiest way to understand the distinction is to look at the original purpose behind each style.
Swim Trunks
Designed for:
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Vacation travel
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Resort wear
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Poolside relaxation
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General swimming
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All-day comfort
Board Shorts
Designed for:
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Surfing
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Watersports
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Athletic performance
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Extended time in the ocean
For most travelers, swim trunks offer more versatility throughout the day.
Fit Comparison
Fit is one of the most noticeable differences.
Swim Trunks
Modern swim trunks typically sit above the knee or slightly at the knee.
This creates a cleaner, more tailored appearance that works well in both casual and upscale environments.
Many luxury resorts, beach clubs, and rooftop pools have embraced shorter, more refined swim trunk styles.
Board Shorts
Board shorts are generally longer.
Many extend to the knee or below.
The longer cut provides additional coverage but often feels less versatile away from the water.
Comfort Comparison
Comfort has become one of the most important considerations in men's swimwear.
Modern swim trunks frequently include:
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Stretch fabrics
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Compression liners
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Quick-dry materials
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Elastic waistbands
These features are designed specifically for all-day wear.
Board shorts often prioritize mobility over comfort features, which can make them feel less supportive during extended periods outside the water.
Why Compression Liners Are Changing Swimwear
One major innovation in modern swim trunks is the rise of compression liners.
Unlike traditional mesh liners, compression liners provide:
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Additional support
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Reduced friction
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Improved comfort
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Better movement
For travelers spending long days exploring destinations like Miami, Tulum, Ibiza, Cabo, or Mykonos, these comfort-focused features have become increasingly popular.
Which Style Looks Better?
Personal preference plays a role, but current trends generally favor tailored swim trunks for most vacation and resort settings.
Swim trunks offer:
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Cleaner silhouettes
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Easier styling
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Better versatility
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More modern resort appeal
Board shorts still dominate within surf culture, but outside of surfing, swim trunks have become the preferred option for many travelers.
Which Option Is Better for Vacation?
For most beach vacations, swim trunks are the better choice.
A typical vacation day might include:
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Breakfast by the beach
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Swimming
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Exploring town
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Lunch at a beach club
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Poolside drinks
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Sunset dining
Swim trunks are designed for exactly this type of versatility.
Rather than changing outfits throughout the day, travelers can comfortably move between activities without sacrificing style or comfort.
When Board Shorts Make Sense
Board shorts remain a great choice when:
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Surfing is your primary activity
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You prefer longer inseams
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You spend extended periods in the ocean
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You like a more athletic aesthetic
For dedicated surfers, board shorts continue to serve an important purpose.
Final Thoughts
Both swim trunks and board shorts have their place, but they were designed with different goals in mind.
Board shorts excel in surfing and watersports environments, while swim trunks offer superior versatility for vacations, resorts, pool days, and everyday beachwear.
For most travelers, comfort, style, and all-day wearability make modern swim trunks the more practical choice.
Whether you're planning a tropical getaway, relaxing poolside, or spending a weekend at the beach, choosing swimwear that works beyond the water can make the entire experience more enjoyable.
Frequently Asked Questions
Are swim trunks better than board shorts?
It depends on the activity. Swim trunks are generally better for vacations, resorts, and casual swimming, while board shorts are ideal for surfing and watersports.
Can you swim in board shorts?
Yes. Board shorts are specifically designed for water use and perform well during surfing and swimming.
Why do swim trunks have liners?
Liners provide support, improve comfort, and help reduce friction during movement.
Are board shorts still in style?
Yes. Board shorts remain popular within surf culture, although shorter swim trunks have become more common in modern resort and vacation settings.
