Cotton Trunks for Men

Cotton trunks for everyday wear under trousers and jeans. Filter by brand, colour or price to find the everyday cut that works for you.

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39 Products
FCUK Flex Archway, Men's Solid Trunks Pack of 2
FCUK FLO Guston,Men's Mesh Trunks Pack of 2
#24867

FCUK FLO Guston,Men's Mesh Trunks Pack of 2

₹ 999.00
FCUK Play Norwood, Men's Solid Trunks Pack of 2
PUMA Nyl Men's Trunk - Vineyard Wine - White
#19760

PUMA Nyl Men's Trunk - Vineyard Wine - White

₹ 699.00
PUMA Nyl Men's Trunk - Black - Cool Dark Grey
#19876

PUMA Nyl Men's Trunk - Black - Cool Dark Grey

₹ 699.00
PUMA Nyl Men's Trunk - Navy - White
#20162

PUMA Nyl Men's Trunk - Navy - White

₹ 699.00
PUMA Nyl Men's Trunk - Strong Grey - Black
#20278

PUMA Nyl Men's Trunk - Strong Grey - Black

₹ 699.00
PUMA Nyl Men's Trunk - Deep Teal- Black
#20384

PUMA Nyl Men's Trunk - Deep Teal- Black

₹ 699.00
PUMA Nyl Men's Trunk - White - Plum
#19654

PUMA Nyl Men's Trunk - White - Plum

₹ 699.00
PUMA Nyl Men's Trunk - Harbor Mist - Black
#55527

PUMA Nyl Men's Trunk - Harbor Mist - Black

₹ 699.00
PUMA Supima Men's Trunks - Team Royal
#25326

PUMA Supima Men's Trunks - Team Royal

₹ 649.00
PUMA Polyamide Mesh Men's Trunk - Strong Grey -White
PUMA Nyl Men's Printed Trunk - Scuba Blue - Georgia Peach
PUMA Supima Men's Trunks - Asphalt
#25494

PUMA Supima Men's Trunks - Asphalt

₹ 649.00
PUMA Nyl Men's Printed Trunk - Vineyard Wine- Fudge - Urban Red
PUMA Supima Men's Trunks - Dark Olive
#25777

PUMA Supima Men's Trunks - Dark Olive

₹ 649.00
PUMA Supima Men's Trunks - Black
#25609

PUMA Supima Men's Trunks - Black

₹ 649.00
PUMA Polyamide Mesh Men's Trunk - Black - Lime Punch
PUMA Polyamide Mesh Men's Trunk - Sunny Lime - Black
FCUK Play Norwood, Men's Solid Trunks Pack of 2
Sale
+7 More Colors
#04098

FCUK Play Norwood, Men's Solid Trunks Pack of 2

₹ 521.00 – ₹ 579.00
FC Regal Baron, Men's Long Trunks Pack of 2
Sale
+8 More Colors
#28322

FC Regal Baron, Men's Long Trunks Pack of 2

₹ 512.00 – ₹ 569.00
FCUK Flex Newbold, Men's Printed Trunks Pack of 2
FCUK GLO Park Royal, Men's Solid Trunks-Same Color-Pack of 2
FCUK FLO Mersey, Men's Solid Trunks-Same Color-Pack of 2
FCUK Flex Galdhawk, Men's Solid Trunks Same Color Pack of 2
FCUK FLO Brewer, Men's Printed Trunks Pack of 2
Sale
+1 More Colors
#04593

FCUK FLO Brewer, Men's Printed Trunks Pack of 2

₹ 1312.00
FCUK Flex Brixton, Men's Printed Trunks Pack of 2
Sale
+1 More Colors
#04623

FCUK Flex Brixton, Men's Printed Trunks Pack of 2

₹ 674.00 – ₹ 749.00
FCUK Flex Galdhawk, Men's Solid Trunks Pack of 2
+1 More Colors
#04289

FCUK Flex Galdhawk, Men's Solid Trunks Pack of 2

₹ 779.00
FCUK Flex Maddox, Men's Printed Trunks Pack of 2
PUMA Stretch Trunks Pack of 2
#19460

PUMA Stretch Trunks Pack of 2

₹ 999.00
FCUK Flex Archway, Men's Solid Trunks Pack of 2
+2 More Colors
#04234

FCUK Flex Archway, Men's Solid Trunks Pack of 2

₹ 679.00
FCUK GLO Dover, Men's Printed Trunks Pack of 2
+3 More Colors
#04500

FCUK GLO Dover, Men's Printed Trunks Pack of 2

₹ 1199.00
FCUK FLO Guston, Men's Mesh Trunks Pack of 2
#04548

FCUK FLO Guston, Men's Mesh Trunks Pack of 2

₹ 999.00
FCUK FLO Mersey, Men's Solid Trunks Pack of 2
Sale
+7 More Colors
#04579

FCUK FLO Mersey, Men's Solid Trunks Pack of 2

₹ 899.00 – ₹ 999.00
FCUK GLO Park Royal, Men's Solid Trunks Pack of 2
Sale
+1 More Colors
#04487

FCUK GLO Park Royal, Men's Solid Trunks Pack of 2

₹ 899.00 – ₹ 999.00
FCUK Flex Tottenham, Men's Printed Trunks Pack of 2
Sale
+4 More Colors
#04135

FCUK Flex Tottenham, Men's Printed Trunks Pack of 2

₹ 629.00 – ₹ 699.00
FCUK Flex Newbold, Men's Printed Trunks-Same Color-Pack of 2
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Buying cotton trunks for men online

Cotton Trunks for Men sit at the top of the thigh with a squared leg, which is why they stay in place under trousers and jeans and why most men end up wearing nothing else.

At Underlinen you can buy cotton trunks for men online from FCUK, French Connection and PUMA. The range also covers Trunks, PUMA Trunks, FCUK Trunks, Printed Trunks and Bamboo Trunks.

If you are between sizes, go by the size chart on the product page rather than by the size on your last pair.

Why it matters

What a good trunk actually does

Trunks sit at the top of the thigh with a squared leg. They stay in place under trousers, jeans and shorts without riding up, which is why they have become the everyday default for most men.

// STAYS WHERE YOU PUT IT

Stays where you put it

The whole job of a trunk is to be forgotten. A squared leg and a flat waistband are what stop the ride-up you notice by mid-afternoon.
// WORKS UNDER EVERYTHING

Works under everything

Trunks sit clean under trousers, jeans, chinos and shorts, which is why most men end up wearing nothing else.
// NO BUNCHING

No bunching

A trunk that fits does not gather at the thigh or twist when you sit, stand and sit again through a working day.
// EASY TO KEEP STOCKED

Easy to keep stocked

Because it is the everyday cut, buying trunks in packs is the simplest way to keep a drawer stocked without thinking about it.
The buying guide

How to choose Cotton Trunks for Men

When you are picking trunks, look at: A quick, honest guide so you buy once and buy right.

// FIT

Fit

A trunk should sit close without gripping. Size to the chart on the product page rather than to the size on your last pair.
// WAISTBAND

Waistband

A wide, flat waistband is what keeps a trunk sitting where you put it through a full day.
// HOW MANY

How many

Trunks are daily wear, so packs and multiples keep the rotation going and each pair lasting longer.
When to wear it

When to wear trunks

Same category, different jobs. Here is where each one earns its place.

// THE WORKING WEEK

The working week

Under trousers and chinos, five days out of seven. This is the cut most men default to for a reason.
// JEANS AND WEEKENDS

Jeans and weekends

A squared leg sits clean under denim, with no line showing through and nothing riding up when you sit.
// TRAVEL

Travel

Trunks pack small and wash easily, which makes them the simplest thing to over-pack and never regret.
Sizing

Getting the size right

Size is the one thing worth getting right before you order. Three things that make it a one-time decision.

// MEASURE, DON'T GUESS

Measure, don't guess

Take a tape around the fullest part of the chest for tops and around the natural waist for bottoms, and read the chart on the product page against that.
// SIZES DIFFER BETWEEN BRANDS

Sizes differ between brands

The size on your last pair is not a size, it is that brand's size. Check the chart every time you buy from a brand you have not bought before.
// SNUG, NOT TIGHT

Snug, not tight

This layer works by sitting close. If it marks the skin it is too small; if it moves around under a shirt it is too big.
Care

Making them last

Most innerwear does not wear out. It gets washed out. Six habits that add months to anything in this range.

  • • Wash cold. Hot water is what shortens the life of anything worn every day.
  • • Keep fabric softener away from elastic waistbands and cuffs: it is what tires them out.
  • • Turn prints and darks inside out before washing to protect the colour.
  • • Dry in shade rather than direct sun, which fades colour and stiffens fabric.
  • • Skip the hot tumble dry. Heat is the single biggest cause of shrinkage and lost stretch.
  • • Own enough to rotate. Anything worn and washed daily lasts longer in a set than on its own.
Questions, answered

The things men actually ask before buying

Yes, trunks are the everyday default for most men. They sit at the top of the thigh and stay in place under trousers, jeans and shorts without riding up.
Go by the size chart on the product page rather than the size on your last pair: sizing differs between brands, and this layer is worn close to the skin.
Yes. Underlinen is an authorised multi-brand store: every piece is sourced directly from the brand and guaranteed authentic.
If you wear them daily, plan on refreshing every six to nine months. Elastic is what goes first: long before the fabric looks worn out.
Yes. Orders are usually processed within one business day and delivered within 2 to 7 business days. Remote locations can take a little longer.

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