Boardshorts vs Swim Trunks: What's the Actual Difference?

Boardshorts and swim trunks are not the same thing, even though they're often confused and even used interchangeably. The main differences come down to length, fit, construction, and intended use: boardshorts are longer, looser, and built for active water sports like surfing; swim trunks are shorter, more fitted, and designed for general beach and pool use. The right choice depends on what you're doing and what you want to look like doing it.

⚡ THE QUICK ANSWER

• Swim trunks: 4"-7" inseam, fitted cut, elastic waistband, built-in liner, versatile for pool, beach, and casual wear 🩳

• Boardshorts: 8"+ inseam, relaxed cut, flat front or velcro closure, originally designed for surfing, longer coverage 🏄♂️

That said, the line between the two has blurred over the years. Many brands (including Bermies) now offer hybrid styles that combine boardshort length with the construction quality and liner options of traditional swim trunks.

🔑 KEY DIFFERENCES AT A GLANCE

📖 A BRIEF HISTORY OF EACH

Swim trunks originated as the standard men's swimwear: a short, lined garment worn for swimming at the pool or beach. They've evolved significantly in terms of fabric technology and fit, but the core concept (short, fitted, lined) has stayed consistent.

Boardshorts emerged from surf culture in the 1950s and 60s. Surfers needed something longer and more durable that wouldn't ride up while paddling or wipe out. The flat front closure (instead of elastic) prevents uncomfortable bunching when lying on a surfboard. The longer length protects the hips and thighs from wax rash on the board's surface.

🎯 WHICH ONE SHOULD YOU CHOOSE?

Choose swim trunks if:

• You're going to the beach or pool

• You want something that works in and out of the water

• You prefer a modern, fitted look

• You want a built-in liner for support and coverage

• You travel and want to pack light

Choose boardshorts if:

• You surf regularly or do active water sports

• You prefer more coverage and a looser fit

• You want the classic California surfer aesthetic

• You don't mind a more specific, sport-oriented garment

Choose a hybrid (like the Bermies Boardshort Liner) if:

• You want boardshort length with the comfort of a compression liner

• You surf but also want something wearable off the water

• You're tall and find shorter trunks look minimal on your frame

🩳THE BERMIES PERSPECTIVE

At Bermies, we believe the best swim trunk is one that works wherever you take it. Our Boardshort Liner: an 8" inseam with built-in compression liner — bridges the gap between traditional boardshorts and modern swim trunks. You get the coverage and active performance of a boardshort with the support and comfort of a compression liner.

For most guys, though, the 5" Classic Liner hits the sweet spot: versatile enough for every occasion, fitted enough to look intentional, and comfortable enough to wear all day.

💡Frequently Asked Questions

Are boardshorts the same as swim trunks?

No. Boardshorts are generally longer (8 inches or more), have a flat front or velcro closure, are more relaxed in fit, and are designed primarily for surfing. Swim trunks are shorter, have an elastic waistband, and are more versatile for general beach and pool use.

Can you surf in regular swim trunks?

You can, but you may find them uncomfortable. Regular swim trunks can ride up while paddling and don't offer the same range of movement as boardshorts. If you surf regularly, boardshorts or a hybrid like the Boardshort Liner are better options.

Can you wear boardshorts to the pool?

Yes, though they may attract some attention at a lap pool where most people wear competitive swimwear. At a resort or leisure pool, boardshorts are perfectly fine.

Why do boardshorts have no mesh liner?

Traditional boardshorts were designed without a built-in liner because surfers typically wear board shorts over a swimsuit bottom or rash guard, and a liner would add unwanted bulk. Modern hybrid boardshorts often include a compression liner as a more comfortable alternative.

Are boardshorts out of style?

Not at all, especially in surf and beach communities. Traditional long boardshorts have become less common in mainstream casual wear (replaced by shorter swim trunks), but they remain the standard in active surf culture and are seeing a revival in certain fashion circles.