Board Shorts vs Swim Trunks: What's the Difference?

Amy Jul 20, 2026

When it comes to summertime, two types of swimwear dominate the beach landscape: board shorts and swim trunks. Both are popular choices, but their differences might surprise you. Here's a comprehensive guide to help you understand, so you can make an informed decision for your next dip in the pool or day at the beach.

How to Choose Between Hybrid Shorts and Swim Trunks
How to Choose Between Hybrid Shorts and Swim Trunks

Before we dive in, let's touch on the basics. Board shorts are long, often knee-length, and are typically worn by surfers and other water sports enthusiasts. Swim trunks, on the other hand, are shorter, usually above or at the knee, and are a versatile choice for various activities in and out of the water. But the story doesn't end there. Let's explore the differences in detail.

Board Shorts vs. Swim Trunks
Board Shorts vs. Swim Trunks

Length and Coverage

Starting with the most obvious difference, board shorts stretch below the knee, providing more coverage. This makes them a popular choice among surfers and water sports enthusiasts, as they stay in place despite vigorous movement. Moreover, they offer additional coverage for those who prefer a more modest look on land.

Boardshorts Outfit, Girls In Swim Trunks, Surfing Pictures, Sun Bum, Surf Outfit, Surf Wear, Swim Trunks, Cute Pictures, Cool Outfits
Boardshorts Outfit, Girls In Swim Trunks, Surfing Pictures, Sun Bum, Surf Outfit, Surf Wear, Swim Trunks, Cute Pictures, Cool Outfits

Swim trunks, however, typically end above or at the knee. While they provide less coverage, they are more aerodynamic and less likely to cause drag in the water. Furthermore, their compact nature makes them easier to maneuver in, with less fabric to get in the way during activities like swimming or running.

Length Variations

Is it Okay to Wear Swim Trunks as Shorts | Brooklyn Cloth
Is it Okay to Wear Swim Trunks as Shorts | Brooklyn Cloth

Board shorts come in a range of lengths, from a few inches above the knee to well below, offering options for everyone. Longer lengths provide more coverage and are excellent for cool or windy days, while shorter lengths are great for warmer weather or water activities.

Swim trunks also offer length variations, typically ranging from a few inches above the knee to around mid-thigh. While they might not provide the same level of coverage as board shorts, they still cater to various preferences and needs.

Design and Style

Board Shorts vs Swim Trunks: What Is the Difference?
Board Shorts vs Swim Trunks: What Is the Difference?

Board shorts are typically designed with a casual, laid-back aesthetic in mind. They often feature loose, baggy fits and come in a variety of fabrics, such as quick-drying polyester. Their relaxed nature makes them versatile, from beach days to weekend outings.

Swim trunks, on the other hand, encompass a wider design spectrum. From tailored fits for a smarter look to casual, loose styles, there's a variety to suit different tastes and occasions. They can be paired with shirts and shoes for a stylish, put-together look or worn casually for beach and poolside lounging.

Material and Fabrics

7 Tips for Choosing Between Swim Trunks and Swim Shorts
7 Tips for Choosing Between Swim Trunks and Swim Shorts

Both board shorts and swim trunks are typically made from quick-drying, chlorine-resistant fabrics like polyester and nylon. However, board shorts may incorporate heavier, more durable materials due to their use in water sports.

Swim trunks often prioritize lightweight, breathable fabrics for enhanced comfort and style. Some high-end options may incorporate advanced textiles for improved UV protection, moisture-wicking, or anti-microbial properties.

Best men’s swim shorts for your body type
Best men’s swim shorts for your body type
Quiksilver Swim | Quiksilver Premium Board Shorts Size 31 Colorblock Surf Swim Beach Trunks | Color: Black/Red | Size: 31
Quiksilver Swim | Quiksilver Premium Board Shorts Size 31 Colorblock Surf Swim Beach Trunks | Color: Black/Red | Size: 31
The Ultimate Guide to Boardshorts and Swimwear
The Ultimate Guide to Boardshorts and Swimwear
How to Quickly Shorten Swim Trunks for a Perfect Fit
How to Quickly Shorten Swim Trunks for a Perfect Fit
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Cadillac Lowrider Trunks - Wine - XL
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Men's Colorblock Swim Trunks - Small / Ink Multi
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Pockets and Features

Board shorts often come equipped with multiple pockets for storing essentials like keys, phones, or cash. They may also feature cargo pockets or secret stash pockets, perfect for secure storage on the go.

Swim trunks typically have fewer pockets, usually one or two, but some offer secure, water-resistant storage for valuables. Many also feature drawstring or elastic waistbands for an adjustable, comfortable fit.

Whether you're a water sports enthusiast or a more casual beach-goer, both board shorts and swim trunks have their unique advantages. When choosing between the two, consider your personal style, preferred level of coverage, and intended activities. No matter your preference, there's a perfect pair out there for you. So, go ahead, dive in, and enjoy your time in the sun!