Best Swimwear for Tall Men in 2026 — Trunks That Actually Reach the Knee

The swim trunk problem is the inverse of every other tall clothing problem. Trunks aren’t engineered to be long — they’re engineered to hit just above the knee on a 5’10” man. On a 6’4” frame, the same trunk hits mid-thigh, and you spend the day adjusting them.

This guide ranks the brands that explicitly extend swim length for tall men, with verified inseams from 9” through 12”. Every brand listed has been confirmed to stock its tall sizing as regular inventory.

The Short Answer

American Tall offers the longest dedicated tall swim line — 11.5” inseam on Extra Tall classic trunks and 13.5” on Extra Tall board shorts. Bonobos Riviera Long and J.Crew Long are the strongest mid-tier picks, both reaching 9”–10” inseam reliably. For board shorts specifically, Birdwell Beach Britches offers extended lengths in their workhorse styles. ASOS Tall rounds out the budget end.

Verified Inseam by Brand

Brand	Max Inseam	Style	Price Range
American Tall (trunks)	11.5” (Tall: 10”, Extra Tall: 11.5”)	Classic trunks	$50–$75
American Tall (board shorts)	13.5” (offered in 12” and 13.5”)	Board shorts	$50–$75
Bonobos Riviera Long	9”–10”	Trunks (fashion-forward)	$79–$98
J.Crew Long	9”–10”	Trunks (classic)	$65–$85
Birdwell Beach Britches	8”–11”	Board shorts (heritage)	$89–$129
ASOS Tall Swim	8”–9”	Trunks (trend-driven)	$30–$55

Verified on brand product pages 2026-05-21.

Inseam-by-height rough guide:

• 6’0”–6’2”: 8” inseam (standard “long”)
• 6’3”–6’5”: 9”–10”
• 6’6”+: 11.5”+ (American Tall Extra Tall) or 12”–13.5” board shorts

What to Look For in Tall Swimwear

Inseam vs. apparent length. Swim trunks are measured by inseam (crotch seam to hem), same as pants. A 9” inseam trunk on a 6’2” man lands roughly at the knee. On a 6’6” man, the same 9” lands 2” above the knee. Going up by 1”–2” of inseam is what extends the apparent length to keep proportions right.

Rise matters in swim. Swim trunks with a low rise gap at the back when sitting on a beach chair — a classic tall-man problem. Brands with proper tall sizing extend the rise alongside the inseam. American Tall and Bonobos Riviera Long both do.

Fabric weight = comfort. Cheap polyester gets clingy when wet and takes 4+ hours to dry. Recycled-polyester blends with quick-dry treatments (Birdwell, Bonobos, J.Crew) dry in under 30 minutes and don’t stick to the leg.

Liner or no liner. Most American trunks include a built-in mesh liner. Most European-style swim shorts don’t. Tall men often prefer linerless because the standard liner is sized for an average inseam and rides up disproportionately on a longer leg. Check the product description before ordering.

Our Top Picks

1. American Tall Swim Trunks — Best for 6’4”+ Frames

Best for: Tall men who need genuine extended length without the price markup Max inseam: 11.5” classic trunks, 13.5” board shorts

American Tall is the only brand on this list that makes swimwear specifically for the upper end of the tall range. Their classic trunks come in two lengths — Tall (10”) and Extra Tall (11.5”) — with the rise extended proportionally so the waistband sits at the natural waist. Their board shorts go further: offered in 12” and 13.5” inseams. Fabric is quick-drying with a mid-rise waist, adjustable drawstring, four-way stretch, and mesh lining.

The aesthetic is closer to classic American swim trunks than fashion-forward European cuts — solid colors, simple cuts, designed to wear for years rather than seasons. For a 6’6”+ frame, this is essentially the only brand that gets the proportions right at this price.

Inseam available: Trunks 10”/11.5”; Board shorts 12”/13.5” Price range: $50–$75 Where to buy: [AFFILIATE LINK: American Tall]

2. Bonobos Riviera Long — Best Mid-Tier Pick

Best for: Men 6’2”–6’5” who want fashion-forward swim with extended length Max inseam: 10”

The Riviera is Bonobos’s swim workhorse, and the “Long” version reaches 9”–10” inseam. The cut is slimmer than American Tall — closer to a tailored European swim short than a classic American trunk — and the colors lean modern (sage, terracotta, navy, with patterned options each season). Quick-dry fabric, no liner in the standard version.

The price is higher than budget brands, but the fit precision (Bonobos publishes waist/inseam combinations on every product page) means you order once and the trunk fits.

Inseam available: 7”, 9”, 10” (in “Long” version) Price range: $79–$98 Where to buy: [AFFILIATE LINK: Bonobos]

3. J.Crew Long Swim Trunks — Best Classic American Cut

Best for: Tall men who want preppy/classic swim trunks at a mid-tier price Max inseam: 10”

J.Crew’s “Long” swim sizing extends to 9”–10” inseam in their standard trunks. The cut is fuller than Bonobos — more “summer house” than “Mediterranean vacation” — with the classic J.Crew color palette (navy, red, green, with frequent stripe and seasonal pattern options). The fabric is recycled-blend, quick-dry, with a standard mesh liner.

Frequent sales drop the effective price below $50. For a tall man who wears swim trunks half-a-dozen times a summer and isn’t trying to make a fashion statement, this is the reliable default.

Inseam available: Up to 10” in “Long” Price range: $65–$85 (frequent sales) Where to buy: [AFFILIATE LINK: J.Crew]

4. Birdwell Beach Britches — Best Heritage Board Short

Best for: Tall men who want a board short built to last 10+ years Max inseam: 11”

Birdwell has been making board shorts in California since 1961 — and unlike most heritage brands, they actually extend their sizing for tall frames. Their “Long” board shorts reach 11” inseam in select styles, with the trademark double-stitched construction and heavy-duty fabric that means a single pair lasts longer than three cheaper pairs.

These are not lightweight modern swim trunks — they’re proper old-school board shorts. Heavier fabric, longer drying time, but the durability is the point. For a tall man who’s tired of buying new trunks every season, this is the buy-it-for-life option.

Inseam available: 8”, 9”, 11” Price range: $89–$129 Where to buy: [AFFILIATE LINK: Birdwell]

5. ASOS Tall Swim — Best Budget Pick

Best for: Stocking up on swim trunks at the lowest price with verified tall sizing Max inseam: 9”

ASOS Tall offers swim trunks at 8”–9” inseam at prices roughly half what the premium brands charge. Quality is what you’d expect — fine for occasional wear, less durable than Bonobos or Birdwell under heavy use. The catalog is wide and turns over each season, so the available patterns and colors change frequently.

For a backup pair, a “lake house” pair you can leave behind without crying, or a beach vacation where one pair will get wrecked, this is the math that works.

Inseam available: 8”, 9” Price range: $30–$55 Where to buy: [AFFILIATE LINK: ASOS]

Quick Reference — Which Trunk for Your Height

Your Height	First Pick	Backup
6’0”–6’2”	Bonobos Riviera Long or J.Crew Long	ASOS Tall
6’3”–6’5”	Bonobos Riviera 10” or American Tall 11”	J.Crew Long
6’6”+	American Tall 11”–12”	Birdwell Long 11”

Swim Briefs and Square-Cut

A note for tall men who prefer European-style swim briefs or square-cuts: most brands in this category (Speedo, Arena, JJ Malibu) don’t make a “tall” version. The fix isn’t extended inseam (these styles have no inseam to extend) but extended rise — and finding it requires sizing up by one waist size and accepting a looser fit. Aussiebum and Andrew Christian both run slightly longer in the rise by default, making them more reliable for tall frames in the brief/square-cut category.

What We Skipped

• Speedo: Their swim trunks cap at 8” inseam standard, no tall line.
• Lululemon: Their swim is fashion-cut, no extended length option.
• Vuori: Their Kore short is great, but the swim version stops at 7” inseam.
• Quiksilver, Billabong: Some board shorts run long, but inseam is inconsistent batch to batch.