Underwear Buying Guide

Authorised UK stockist 📍 44 Barrow Street, St Helens, WA10 1RY 📞 01744 730985 🕘 Mon–Sat 9am–5pm ★★★★★ 4.6 2,387 reviews on Reviews.io

Choosing designer underwear by cut and fabric

Underwear Buying Guide

Cut, fabric and use decided -- how to choose the right pair

OD's Designer Clothing · Knowledge Hubs

The right underwear comes down to a few clear decisions -- the cut, the fabric and how you will wear it. This hub turns the vocabulary of the other hubs into a simple way to choose, and links through to the ranges we stock.

Choose by cut

Choose by Cut

Match the cut to the trousers and support you want.

How to decide

Pick trunks or boxer briefs for slim trousers, boxers for a loose feel, briefs for maximum support and long leg boxers to stop chafing.

What to look for

Think first about how it sits under your usual trousers, then about the support and leg length you prefer. Browse mens underwear (/collections/mens-underwear).

Choose by Support

Decide how much hold and shaping you want.

How to decide

Briefs and boxer briefs give the most support, boxers the least, and compression shorts the firmest hold for sport.

What to look for

A shaped pouch and a fitted leg give everyday support, while compression fabric is for training and team sport.

Choose by fabric

Choose by Fabric

Pick the fibre for comfort, coolness or sport.

How to decide

Choose cotton or stretch cotton for everyday, modal or bamboo for a soft cool feel, and performance blends for sport.

What to look for

Match the fabric to the weather and use, remembering that natural fibres breathe while synthetics wick and dry fast.

Choose by Season

Warm base layers for winter, breathable fibres for summer.

How to decide

In winter add thermal underwear or merino base layers, and in summer favour breathable cotton, modal or bamboo.

What to look for

Merino is the versatile all-season choice, warm when cold and cool when warm, and ideal for travel.

Practical choices

Multipacks

Buying in packs for everyday value.

How to decide

Multipacks offer the best value for everyday cotton pairs you will rotate and replace regularly.

What to look for

Buy single premium pairs to try a new brand or fabric, then multipacks once you know the size and cut suit you.

Waistband Preference

Choose visible branding or a discreet band.

How to decide

Pick an exposed branded waistband for the designer look, or a covered band for a smooth, understated finish.

What to look for

Woven jacquard branding lasts longer than print, and a brushed or anti-roll band adds comfort.

Colour Choice

Neutrals for versatility, colour for character.

How to decide

Black, grey, navy and white cover everyday needs and stay discreet, while colour and pattern add character.

What to look for

White vests and undershirts sit invisibly under fine shirts, while darker pairs hide wear and show less.

Choose by Brand

Match a brand to the look, fabric and fit you like.

How to decide

Each brand has its own cut, fabric mix and waistband style, so a label you fit well in is worth staying with.

What to look for

Explore the brands we stock to find your best fit. Browse mens underwear (/collections/mens-underwear) and womens underwear and loungewear (/collections/womens-underwear-loungewear).

Frequently asked questions

What underwear cut should I buy?

Choose trunks or boxer briefs for slim trousers, boxers for a loose feel, briefs for maximum support and long leg boxers to stop chafing. Think first about how it sits under your usual trousers, then the support and leg length you prefer.

What is the best underwear fabric?

Cotton and stretch cotton are the durable everyday standard, modal and bamboo feel softer and cooler, and performance blends wick and dry fast for sport. Match the fabric to the weather and how you will wear it.

Are underwear multipacks worth it?

Multipacks give the best value for everyday cotton pairs you will rotate and replace. It is often best to try a single premium pair to check the brand's size and cut suit you, then buy multipacks once you know they fit.

Get the next guide first
New underwear guides, restocks and the occasional buyer's tip -- straight to your inbox. No spam.
Unsubscribe any time. We never share your details.