Underwear Types

A range of designer underwear in different cuts and styles

Underwear Types

Boxers, briefs, trunks and base layers -- the full underwear vocabulary

OD's Designer Clothing · Knowledge Hubs

Underwear names are used loosely on the high street, yet the cut decides coverage, support and how it sits under clothing. This hub sets out the main underwear types across our range -- grouped by everyday cuts, sport and base layers, and tops and vests -- so you can shop by the right name.

Everyday cuts

Boxer Shorts

Loose-fitting shorts with a relaxed leg for airflow and comfort.

What defines it

Boxer shorts have a full, loose cut with a longer, roomy leg and a soft waistband, giving a relaxed fit with plenty of airflow.

Who it suits

They suit those who prefer a loose, breathable feel and a classic look under casual trousers and loungewear.

Boxer Briefs

The most popular cut -- a fitted short leg with full support.

What defines it

Boxer briefs combine a fitted, close leg with full seat and pouch support, sitting between a boxer and a brief.

Who it suits

They suit almost everyone as an all-day cut, giving support without the loose leg riding up under trousers.

Briefs

A classic, legless cut with high coverage and support.

What defines it

Briefs have no leg, sitting high on the hip with a supportive front pouch and full rear coverage for a snug fit.

Who it suits

They suit those wanting maximum support with minimal fabric, and a slim profile under fitted trousers.

Trunks

A short-legged, square-cut boxer brief with a modern silhouette.

What defines it

Trunks are a boxer brief with a shorter leg and a square-cut shape, giving a neat, close fit with a low profile.

Who it suits

They suit slim and tailored trousers where a short leg avoids bulk, and a modern, streamlined look is wanted.

Long Leg Boxers

Boxer briefs with an extended leg to prevent ride-up and chafing.

What defines it

Long leg boxers extend the fitted leg further down the thigh, staying in place and covering more of the leg.

Who it suits

They suit taller wearers and anyone prone to inner-thigh chafing, and work well under trousers and for sport.

Sport and base layers

Compression Shorts

Tight, supportive shorts that hold the muscles during sport.

What defines it

Compression shorts use firm, stretch fabric that hugs the thigh and seat, supporting the muscles and wicking sweat.

Who it suits

They suit training and team sport where muscle support, moisture control and a locked-in fit matter.

Base Layer Shorts

Technical shorts worn as the first layer under sportswear.

What defines it

Base layer shorts sit close to the skin in wicking, stretch fabric, forming the foundation layer under kit or trousers.

Who it suits

They suit active wear and cold-weather layering, managing sweat and warmth against the skin.

Thermal Underwear

Insulating underwear that traps warmth in cold conditions.

What defines it

Thermal underwear uses brushed or knitted fibres that trap warm air close to the body for insulation without bulk.

Who it suits

It suits winter, outdoor work and cold-weather sport, worn as a warm first layer under clothing.

Tops and vests

Vests

Sleeveless tops worn as a base layer for warmth or coverage.

What defines it

A vest is a sleeveless top worn next to the skin, adding a layer of warmth and absorbing perspiration under shirts.

Who it suits

They suit those who want an extra warm layer or a smooth base under fine shirts and knitwear.

Undershirts

Short or long-sleeved tops worn beneath a shirt.

What defines it

An undershirt is a fitted cotton or modal top with sleeves, worn beneath a shirt to protect it and add comfort.

Who it suits

They suit smart wear where an undershirt keeps a shirt fresh and provides a smooth, comfortable base.

Frequently asked questions

What is the difference between trunks and boxer briefs?

Trunks have a shorter, square-cut leg for a neat, low-profile fit, while boxer briefs have a longer fitted leg. Both give full support, so the choice comes down to leg length and how they sit under your trousers.

Which underwear type is best under slim trousers?

Trunks and boxer briefs sit closest to the body with minimal bulk, making them the neatest choice under slim and tailored trousers. Long leg boxers also work well and prevent ride-up.

What are long leg boxers for?

Long leg boxers extend the fitted leg further down the thigh to stop the leg riding up and to prevent inner-thigh chafing, which makes them popular with taller wearers and for sport.

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